StatTrak™
Covert → knife or gloves · Items in the contract: 5About the craftCraft 3280264 · ways to build: 3StatTrak™ craft. Inputs and outcome are StatTrak: a normal item won't do here, and the outcome sells at the StatTrak price, which differs from the price of the normal item.A contract of five Covert. The outcome is a knife or gloves from the inputs' collection, and it has many outcomes: the chance of a particular item is therefore small, and what counts is the average over all outcomes.The Steam fee is included. You can sell the outcome a week after crafting.
How to build
Ways to build
3 ways: the best first, then from the most accessible. Click a tab and the numbers below are recalculated for that way.
!
100% of lots fit:на контракт не хватает: нужно 3 шт., годных ≈9≈ market listings are not enough for even one contract (by listings)
×3
StatTrak™ Glock-18 | Bullet Queen
Battle-Scarred
any lot
201.59 $
at 67.20
if this one runs out, you can take
StatTrak™ M4A1-S | Player Two (Field-Tested) — 72.98 $+5.78 $ per item · on the market 30 · buy0.1500–0.3800
SteamBuyLis-SkinsCSFloatMarket.CSGOPurchase detailsf′ (normalized) 1.000000wear 0.4500–1.0000on the market 9 · good ≈ 9Lis-Skins: suitable 41 of 41 · from 50.17 $ (float 0.5932) · craft not before 30.10 · data 23.10 01:48 MSK
×1
StatTrak™ M4A4 | The Battlestar
Field-Tested
any lot
47.96 $
at 47.96
if this one runs out, you can take
StatTrak™ AK-47 | Fuel Injector (Battle-Scarred) — 220.65 $+172.70 $ per item · on the market 6 · buy0.4500–1.0000
SteamBuyLis-SkinsCSFloatMarket.CSGOPurchase detailsf′ (normalized) 0.593750wear 0.1500–0.3800on the market 14 · good ≈ 14Lis-Skins: suitable 29 of 29 · from 44.26 $ (float 0.2050) · craft not before 30.10 · data 23.10 01:48 MSK
×1
StatTrak™ M4A4 | The Battlestar
Battle-Scarred
any lot
59.99 $
at 59.99
if this one runs out, you can take
StatTrak™ AK-47 | Fuel Injector (Battle-Scarred) — 220.65 $+160.67 $ per item · on the market 6 · buy0.4500–1.0000
The gain is understated:2 outcomes have no price, that is 9.2% of the chance
They have no price on Steam: they are above its cap. They count as zero in the calculation, so the profit shown is a lower bound, and noticeably so.
!
100% of lots fit:на контракт не хватает: нужно 2 шт., годных ≈9≈ market listings are not enough for even one contract (by listings)
×2
StatTrak™ Glock-18 | Bullet Queen
Battle-Scarred
any lot
134.40 $
at 67.20
if this one runs out, you can take
StatTrak™ M4A1-S | Player Two (Field-Tested) — 72.98 $+5.78 $ per item · on the market 30 · buy0.1500–0.3800
SteamBuyLis-SkinsCSFloatMarket.CSGOPurchase detailsf′ (normalized) 1.000000wear 0.4500–1.0000on the market 9 · good ≈ 9Lis-Skins: suitable 41 of 41 · from 50.17 $ (float 0.5932) · craft not before 30.10 · data 23.10 01:48 MSK
×1
StatTrak™ M4A4 | The Battlestar
Field-Tested
any lot
47.96 $
at 47.96
if this one runs out, you can take
StatTrak™ AK-47 | Fuel Injector (Battle-Scarred) — 220.65 $+172.70 $ per item · on the market 6 · buy0.4500–1.0000
SteamBuyLis-SkinsCSFloatMarket.CSGOPurchase detailsf′ (normalized) 0.593750wear 0.1500–0.3800on the market 14 · good ≈ 14Lis-Skins: suitable 29 of 29 · from 44.26 $ (float 0.2050) · craft not before 30.10 · data 23.10 01:48 MSK
×2
StatTrak™ M4A4 | The Battlestar
Battle-Scarred
any lot
119.97 $
at 59.99
if this one runs out, you can take
StatTrak™ AK-47 | Fuel Injector (Battle-Scarred) — 220.65 $+160.67 $ per item · on the market 6 · buy0.4500–1.0000
The gain is understated:2 outcomes have no price, that is 12.3% of the chance
They have no price on Steam: they are above its cap. They count as zero in the calculation, so the profit shown is a lower bound, and noticeably so.
!
100% of lots fit:на контракт не хватает: нужно 3 шт., годных ≈7≈ market listings are not enough for even one contract (by listings)
×1
StatTrak™ Glock-18 | Bullet Queen
Battle-Scarred
any lot
67.20 $
at 67.20
if this one runs out, you can take
StatTrak™ M4A1-S | Player Two (Field-Tested) — 72.98 $+5.78 $ per item · on the market 30 · buy0.1500–0.3800
SteamBuyLis-SkinsCSFloatMarket.CSGOPurchase detailsf′ (normalized) 1.000000wear 0.4500–1.0000on the market 9 · good ≈ 9Lis-Skins: suitable 41 of 41 · from 50.17 $ (float 0.5932) · craft not before 30.10 · data 23.10 01:48 MSK
×1
StatTrak™ M4A4 | The Battlestar
Field-Tested
any lot
47.96 $
at 47.96
if this one runs out, you can take
StatTrak™ AK-47 | Fuel Injector (Battle-Scarred) — 220.65 $+172.70 $ per item · on the market 6 · buy0.4500–1.0000
SteamBuyLis-SkinsCSFloatMarket.CSGOPurchase detailsf′ (normalized) 0.593750wear 0.1500–0.3800on the market 14 · good ≈ 14Lis-Skins: suitable 29 of 29 · from 44.26 $ (float 0.2050) · craft not before 30.10 · data 23.10 01:48 MSK
×3
StatTrak™ M4A4 | The Battlestar
Battle-Scarred
any lot
179.96 $
at 59.99
if this one runs out, you can take
StatTrak™ AK-47 | Fuel Injector (Battle-Scarred) — 220.65 $+160.67 $ per item · on the market 6 · buy0.4500–1.0000
rarely sells: 0 a month — calculated at the buy order 266.36 $sell now to a buy order: 266.36 $
(you get 231.62 $)) · buy orders: 53Market.CSGO: 1 listings, too few, no price
on CSFloat: from 359.00 $listings: 5
rarely sells: 1 a month — calculated at the buy order 188.22 $sell now to a buy order: 188.22 $
(you get 163.67 $)) · buy orders: 87
sell on Market.CSGO: 207.01 $ to your card
cheapest lot 226.99 · lots 4CSFloat: 2 listings, too few, no price
on Lis-Skins: from 214.76 $listings: 3
rarely sells: 0 a month — calculated at the buy order 103.95 $sell now to a buy order: 103.95 $
(you get 90.40 $)) · buy orders: 91
sell on Market.CSGO: 232.40 $ to your card
cheapest lot 254.82 · lots 5Lis-Skins: 1 listings, too few, no price
BS costs more than WW: 111.47 $ versus 84.43 $ — calculated at the price of WWrarely sells: 4 a month — calculated at the current 111.47 $, buy orders and sales are not lowersell now to a buy order: 112.20 $
(you get 97.57 $)) · buy orders: 75
sell on Market.CSGO: 99.09 $ to your card
cheapest lot 108.65 · lots 6CSFloat: 1 listings, too few, no price
on Lis-Skins: from 106.49 $listings: 5
BS costs more than WW: 209.61 $ versus 190.01 $ — calculated at the price of WWrarely sells: 2 a month — calculated at the buy order 209.61 $sell now to a buy order: 209.61 $
(you get 182.27 $)) · buy orders: 110Market.CSGO: 1 listings, too few, no price
on CSFloat: from 184.40 $listings: 7
on Lis-Skins: from 194.60 $listings: 4
rarely sells: 1 a month — calculated at the buy order 56.42 $sell now to a buy order: 56.42 $
(you get 49.06 $)) · buy orders: 122Market.CSGO: 2 listings, too few, no price
on CSFloat: from 63.90 $listings: 4Lis-Skins: 2 listings, too few, no price
Steam★ StatTrak™ Bowie Knife | Boreal Forest (Battle-Scarred)The Wildfire Collectionsell now to a buy order: 55.15 $
(you get 47.96 $)) · buy orders: 98Market.CSGO: 2 listings, too few, no priceCSFloat: 1 listings, too few, no priceLis-Skins: 1 listings, too few, no price
BS costs more than WW: 134.27 $ versus 116.10 $ — calculated at the price of WWrarely sells: 1 a month — calculated at the buy order 134.27 $sell now to a buy order: 134.27 $
(you get 116.76 $)) · buy orders: 153Market.CSGO: 1 listings, too few, no price
on CSFloat: from 340.00 $listings: 6
on CS.Money: ~ 185.60 $Lis-Skins: 1 listings, too few, no price
Steam★ StatTrak™ Bowie Knife | Night (Battle-Scarred)The Wildfire Collectionsell now to a buy order: 75.60 $
(you get 65.74 $)) · buy orders: 95Market.CSGO: 2 listings, too few, no priceCSFloat: 1 listings, too few, no priceLis-Skins: 1 listings, too few, no price
rarely sells: 1 a month — calculated at the buy order 59.31 $sell now to a buy order: 59.31 $
(you get 51.57 $)) · buy orders: 93not listed on Market.CSGO right nowCSFloat: 2 listings, too few, no price
BS costs more than FT: 60.31 $ versus 45.12 $ — calculated at the price of FTrarely sells: 0 a month — calculated at the buy order 60.31 $sell now to a buy order: 60.31 $
(you get 52.44 $)) · buy orders: 53not listed on Market.CSGO right nowCSFloat: 2 listings, too few, no priceLis-Skins: 1 listings, too few, no price
Steam★ StatTrak™ Bowie Knife | Urban Masked (Battle-Scarred)net 64.47 $The Wildfire Collectionno price on Steam, listing on CSFloat from 65.78 $listings 5 · you get 64.47 $ (2.0% fee from the price)ignoring float and patternBS costs more than WW: 91.00 $ versus 65.78 $ — calculated at the price of WWsell now to a buy order: 94.62 $
(you get 82.28 $)) · buy orders: 70
sell on Market.CSGO: 89.35 $ to your card
cheapest lot 97.98 · lots 3
on CSFloat: from 91.00 $listings: 5
rarely sells: 2 a month — calculated at the buy order 90.27 $sell now to a buy order: 90.27 $
(you get 78.49 $)) · buy orders: 191
sell on Market.CSGO: 120.18 $ to your card
cheapest lot 131.78 · lots 7CSFloat: 2 listings, too few, no price
on Lis-Skins: from 116.75 $listings: 35
MW costs more than FN: 196.13 $ versus 144.91 $ — calculated at the price of FNrarely sells: 0 a month — calculated at the buy order 196.13 $sell now to a buy order: 196.13 $
(you get 170.55 $)) · buy orders: 200Market.CSGO: 1 listings, too few, no priceCSFloat: 2 listings, too few, no price
rarely sells: 2 a month — calculated at the buy order 82.45 $sell now to a buy order: 82.45 $
(you get 71.69 $)) · buy orders: 91not listed on Market.CSGO right now
on CSFloat: from 139.99 $listings: 3
MW costs more than FN: 104.95 $ versus 86.10 $ — calculated at the price of FNrarely sells: 0 a month — calculated at the buy order 104.95 $sell now to a buy order: 104.95 $
(you get 91.26 $)) · buy orders: 80
sell on Market.CSGO: 140.95 $ to your card
cheapest lot 154.55 · lots 5CSFloat: 1 listings, too few, no price
on Lis-Skins: from 160.95 $listings: 3
rarely sells: 1 a month — calculated at the buy order 55.29 $sell now to a buy order: 55.29 $
(you get 48.08 $)) · buy orders: 74Market.CSGO: 1 listings, too few, no priceCSFloat: 2 listings, too few, no priceLis-Skins: 1 listings, too few, no price
Steam★ StatTrak™ Navaja Knife | Rust Coat (Battle-Scarred)net 46.76 $sells 6 a weeknow 53.77 $ — cheaper than the month average 58.18 $sell now to a buy order: 53.89 $
(you get 46.86 $)) · buy orders: 286
sell on Market.CSGO: 46.59 $ to your card
cheapest lot 51.08 · lots 15
on CSFloat: from 45.99 $listings: 10
on CS.Money: ~ 48.23 $
on Lis-Skins: from 45.83 $listings: 26
BS costs more than WW: 60.46 $ versus 57.39 $ — calculated at the price of WWmonth average 60.46 $, sold 10 — it costs more now, the calculation uses the averagesell now to a buy order: 57.61 $
(you get 50.10 $)) · buy orders: 132
sell on Market.CSGO: 59.14 $ to your card
cheapest lot 64.85 · lots 4CSFloat: 1 listings, too few, no priceLis-Skins: 2 listings, too few, no price
rarely sells: 1 a month — calculated at the buy order 485.39 $sell now to a buy order: 485.39 $
(you get 422.08 $)) · buy orders: 114Market.CSGO: 1 listings, too few, no price
on CSFloat: from 543.56 $listings: 7
Steam★ StatTrak™ Stiletto Knife | Marble Fade (Minimal Wear)net 352.32 $no price on Steam, listing on CSFloat from 359.52 $listings 5 · you get 352.32 $ (2.0% fee from the price)ignoring float and patternMW costs more than FN: 394.60 $ versus 359.52 $ — calculated at the price of FNsell now to a buy order: 416.81 $
(you get 362.45 $)) · buy orders: 106Market.CSGO: 2 listings, too few, no price
on CSFloat: from 394.60 $listings: 5
on CS.Money: ~ 364.39 $
MW costs more than FN: 329.99 $ versus 327.33 $ — calculated at the price of FNrarely sells: 0 a month — calculated at the buy order 329.99 $sell now to a buy order: 329.99 $
(you get 286.94 $)) · buy orders: 168
sell on Market.CSGO: 423.28 $ to your card
cheapest lot 464.12 · lots 4
on CSFloat: from 423.18 $listings: 5
on CS.Money: ~ 346.37 $
on Lis-Skins: from 420.51 $listings: 3
rarely sells: 3 a month — calculated at the buy order 143.22 $sell now to a buy order: 143.22 $
(you get 124.54 $)) · buy orders: 65Market.CSGO: 2 listings, too few, no priceCSFloat: 2 listings, too few, no price
on CS.Money: ~ 192.06 $Lis-Skins: 1 listings, too few, no price
Steam★ StatTrak™ Stiletto Knife | Rust Coat (Battle-Scarred)net 132.59 $sells 5 a weeknow 152.48 $ — cheaper than the month average 166.23 $sell now to a buy order: 143.22 $
(you get 124.54 $)) · buy orders: 154
sell on Market.CSGO: 145.94 $ to your card
cheapest lot 160.02 · lots 6
on CSFloat: from 124.24 $listings: 11
on CS.Money: ~ 133.84 $
on Lis-Skins: from 135.36 $listings: 29
rarely sells: 5 a month — calculated at the buy order 183.54 $sell now to a buy order: 183.54 $
(you get 159.60 $)) · buy orders: 100
sell on Market.CSGO: 189.33 $ to your card
cheapest lot 207.60 · lots 7
on CS.Money: ~ 157.91 $
on Lis-Skins: from 185.61 $listings: 15
MW costs more than FN: 369.49 $ versus 314.16 $ — calculated at the price of FNrarely sells: 0 a month — calculated at the buy order 369.49 $sell now to a buy order: 369.49 $
(you get 321.30 $)) · buy orders: 84Market.CSGO: 2 listings, too few, no price
on CSFloat: from 468.10 $listings: 6
MW costs more than FN: 250.13 $ versus 197.35 $ — calculated at the price of FNrarely sells: 0 a month — calculated at the buy order 250.13 $sell now to a buy order: 250.13 $
(you get 217.51 $)) · buy orders: 159
sell on Market.CSGO: 216.84 $ to your card
cheapest lot 237.77 · lots 4
on CSFloat: from 211.49 $listings: 7Lis-Skins: 2 listings, too few, no price
MW costs more than FN: 170.44 $ versus 158.14 $ — calculated at the price of FNrarely sells: 0 a month — calculated at the buy order 170.44 $sell now to a buy order: 170.44 $
(you get 148.21 $)) · buy orders: 131
sell on Market.CSGO: 218.17 $ to your card
cheapest lot 239.22 · lots 10
on CSFloat: from 160.00 $listings: 5
on CS.Money: ~ 176.85 $Lis-Skins: 2 listings, too few, no price
rarely sells: 1 a month — calculated at the buy order 73.26 $sell now to a buy order: 73.26 $
(you get 63.71 $)) · buy orders: 124
sell on Market.CSGO: 110.33 $ to your card
cheapest lot 120.98 · lots 5CSFloat: 1 listings, too few, no price
on Lis-Skins: from 114.59 $listings: 5
Steam★ StatTrak™ Ursus Knife | Rust Coat (Battle-Scarred)net 54.42 $sells 6 a weekBS costs more than WW: 65.25 $ versus 62.58 $ — calculated at the price of WWnow 65.25 $ — cheaper than the month average 76.83 $sell now to a buy order: 65.61 $
(you get 57.06 $)) · buy orders: 142
sell on Market.CSGO: 58.41 $ to your card
cheapest lot 64.04 · lots 23
on CSFloat: from 59.66 $listings: 8
on CS.Money: ~ 59.18 $
on Lis-Skins: from 55.83 $listings: 61
Steam★ StatTrak™ Ursus Knife | Ultraviolet (Battle-Scarred)net 79.29 $sells 6 a weeknow 91.18 $ — cheaper than the month average 96.70 $sell now to a buy order: 96.93 $
(you get 84.28 $)) · buy orders: 91
sell on Market.CSGO: 105.81 $ to your card
cheapest lot 116.02 · lots 6
on CSFloat: from 102.50 $listings: 7
on CS.Money: ~ 75.78 $Lis-Skins: 2 listings, too few, no price
Steam★ StatTrak™ Talon Knife | Doppler (Minimal Wear)net 1 043.94 $no price on Steam, listing on CSFloat from 1 065.24 $listings 7 · you get 1 043.94 $ (2.0% fee from the price)ignoring float and patternMW costs more than FN: 1 137.82 $ versus 1 065.24 $ — calculated at the price of FNsell now to a buy order: 842.04 $
(you get 732.21 $)) · buy orders: 162Market.CSGO: 1 listings, too few, no price
on CSFloat: from 1 137.82 $listings: 7
Steam★ StatTrak™ Talon Knife | Marble Fade (Minimal Wear)net 649.16 $no price on Steam, listing on CSFloat from 662.41 $listings 4 · you get 649.16 $ (2.0% fee from the price)ignoring float and patternMW costs more than FN: 695.00 $ versus 662.41 $ — calculated at the price of FNsell now to a buy order: 674.27 $
(you get 586.32 $)) · buy orders: 239
sell on Market.CSGO: 726.81 $ to your card
cheapest lot 796.94 · lots 4
on CSFloat: from 695.00 $listings: 4
on CS.Money: ~ 629.93 $Lis-Skins: 2 listings, too few, no price
rarely sells: 0 a month — calculated at the buy order 515.31 $sell now to a buy order: 515.31 $
(you get 448.09 $)) · buy orders: 90
sell on Market.CSGO: 605.84 $ to your card
cheapest lot 664.30 · lots 3
on CSFloat: from 567.00 $listings: 4
on CS.Money: ~ 565.09 $Lis-Skins: 1 listings, too few, no price
Steam★ StatTrak™ Talon Knife | Damascus Steel (Battle-Scarred)net 273.84 $no price on Steam, listing on CSFloat from 279.42 $listings 3 · you get 273.84 $ (2.0% fee from the price)ignoring float and patternBS costs more than WW: 320.85 $ versus 279.42 $ — calculated at the price of WWsell now to a buy order: 234.28 $
(you get 203.72 $)) · buy orders: 80Market.CSGO: 2 listings, too few, no price
on CSFloat: from 320.85 $listings: 3
on Lis-Skins: from 372.47 $listings: 3
Steam★ StatTrak™ Talon Knife | Rust Coat (Battle-Scarred)net 239.26 $
by lot · 0 sales per day
rarely sells: 9 a month — calculated at the buy order 275.15 $sell now to a buy order: 275.15 $
(you get 239.26 $)) · buy orders: 182
sell on Market.CSGO: 253.30 $ to your card
cheapest lot 277.74 · lots 9
on CSFloat: from 230.99 $listings: 22
on CS.Money: ~ 272.48 $
on Lis-Skins: from 255.64 $listings: 31
Steam★ StatTrak™ Talon Knife | Ultraviolet (Battle-Scarred)net 240.07 $
by lot · 0 sales per day
BS costs more than WW: 329.66 $ versus 276.09 $ — calculated at the price of WWmonth average 329.66 $, sold 10 — it costs more now, the calculation uses the averagesell now to a buy order: 282.26 $
(you get 245.44 $)) · buy orders: 114
sell on Market.CSGO: 272.56 $ to your card
cheapest lot 298.86 · lots 14
on CSFloat: from 263.11 $listings: 5
on CS.Money: ~ 253.66 $
on Lis-Skins: from 262.80 $listings: 15
Steam★ StatTrak™ Ursus Knifenet 77.33 $sells 6 a weeknow 88.93 $ — cheaper than the month average 101.46 $sell now to a buy order: 86.44 $
(you get 75.17 $)) · buy orders: 232
sell on Market.CSGO: 79.40 $ to your card
cheapest lot 87.06 · lots 10
on CSFloat: from 77.18 $listings: 13
on CS.Money: ~ 74.69 $
on Lis-Skins: from 78.21 $listings: 34
Steam★ StatTrak™ Navaja Knifenet 48.32 $sells 3 a weeknow 55.57 $ — cheaper than the month average 65.67 $sell now to a buy order: 54.50 $
(you get 47.39 $)) · buy orders: 319
sell on Market.CSGO: 48.36 $ to your card
cheapest lot 53.02 · lots 7
on CSFloat: from 63.00 $listings: 5
on CS.Money: ~ 48.19 $
on Lis-Skins: from 48.24 $listings: 37
Steam★ StatTrak™ Stiletto Knifenet 189.74 $sells 5 a weeknow 218.20 $ — cheaper than the month average 261.66 $sell now to a buy order: 200.28 $
(you get 174.16 $)) · buy orders: 281
sell on Market.CSGO: 388.93 $ to your card
cheapest lot 426.46 · lots 6
on CSFloat: from 180.00 $listings: 17
on CS.Money: ~ 201.74 $
on Lis-Skins: from 193.45 $listings: 31
Steam★ StatTrak™ Talon Knifenet 275.16 $sells 4 a weekrarely sells: 8 a month — calculated at the buy order 316.43 $sell now to a buy order: 316.43 $
(you get 275.16 $)) · buy orders: 329
sell on Market.CSGO: 340.06 $ to your card
cheapest lot 372.87 · lots 7
on CSFloat: from 282.85 $listings: 23
on CS.Money: ~ 330.04 $
on Lis-Skins: from 292.88 $listings: 32
float markup by input
how many times more the lots with the needed float cost
StatTrak™ Glock-18 | Bullet Queen (Battle-Scarred) × 3100% of the wear range fits×1.03201.59 → 207.18 $
StatTrak™ M4A4 | The Battlestar (Field-Tested) × 1100% of the wear range fits×1.0047.96 → 47.94 $
StatTrak™ M4A4 | The Battlestar (Battle-Scarred) × 1100% of the wear range fits×1.0159.99 → 60.49 $
The markup is taken from a check of Steam 25–26.09.2026 listings. It shows how many times the needed number of cheapest listings with a fitting float cost more than the cheapest listing of this wear. It depends on the width of the float window and on the number of items.
«No higher than» — is a guarantee. The limits are calculated together: take all items with the float at the upper bound and you get exactly the result shown. With a lower float the result will be better.
f′ — the same float, brought to 0–1 by the skin's own range. CSFloat counts the same way.
In a week, when the outcome can be sold
from outcome price history
In a bad week−162.99 $a worse week happens one time in ten
In a typical week−148.29 $historical median
If you repeat
10 000 simulations over the outcome odds
I already have items
Enter their float and the site will pick what to buy
Items of this craft's collections of the right rarity fit: The Prisma 2 Collection and The Wildfire Collection — and of the mixed-in collection: enter its items with float, your own or ones you want to buy. Its share in the set equals its share in the chances. Your own items are counted in the profit at market price, because you could sell them. The money needed to buy the rest is shown separately.
Third collection
Add a third collection to the craft's two and see whether it gets more profitable
All splits of inputs across three collections are tried (1/1/8, 5/3/2 and the rest) and all outcome wears. The best set is shown for each collection. “Find the best” first quickly scores all collections and then calculates exactly the five best by the quick score.
How to read these numbers
Fees. Steam adds 15% to the seller's price, so the seller gets the listing price divided by 1,15. Multiplying by 0,85 is wrong.
The outcome can only be sold after a week. Inputs bought on Steam go into the contract right away. The outcome can also be crafted further without waiting, but Sell it is possible only after seven days. Over a week the price may change, so the amount shown remains an estimate at calculation time.
Prices are conservative. Sales are counted at the lower of the listing price and the sale price. Purchases are counted at the cheapest listing, which is a lower bound. You cannot buy ten at that price: each next listing costs more. «Check floats on Steam» shows the real purchase price.