StatTrak™
Covert → knife or gloves · Items in the contract: 5About the craftCraft 3320840 · 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 2 шт., годных ≈10≈ market listings are not enough for even one contract (by listings)
×2
StatTrak™ FAMAS | Bad Trip
Battle-Scarred
any lot
109.30 $
at 54.65
if this one runs out, you can take
StatTrak™ AWP | Printstream (Battle-Scarred) — 60.69 $+6.04 $ per item · on the market 14 · buy0.4500–1.0000
SteamBuyLis-SkinsCSFloatMarket.CSGOPurchase detailsf′ (normalized) 1.000000wear 0.4500–1.0000on the market 10 · good ≈ 10Lis-Skins: suitable 43 of 43 · from 38.71 $ (float 0.7695) · craft not before 31.10 · data 23.10 13:22 MSK
×2
StatTrak™ M4A4 | The Battlestar
Field-Tested
any lot
95.90 $
at 47.95
if this one runs out, you can take
StatTrak™ AK-47 | Fuel Injector (Battle-Scarred) — 220.63 $+172.67 $ 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 30 of 30 · from 41.38 $ (float 0.3740) · craft not before 31.10 · data 23.10 13:22 MSK
×1
StatTrak™ M4A4 | The Battlestar
Well-Worn
any lot
50.01 $
at 50.01
if this one runs out, you can take
StatTrak™ AK-47 | Fuel Injector (Battle-Scarred) — 220.63 $+170.61 $ per item · on the market 6 · buy0.4500–1.0000
SteamBuyLis-SkinsCSFloatMarket.CSGOPurchase detailsf′ (normalized) 0.703125wear 0.3800–0.4500on the market 3 · good ≈ 3Lis-Skins: suitable 1 of 1 · from 51.59 $ (float 0.3804) · craft not before 31.10 · data 23.10 13:22 MSK
Set · 5 pcs255.22 $
−139.78
(−54.8%)
!
The gain is understated:2 outcomes have no price, that is 6.2% 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 ≈10≈ market listings are not enough for even one contract (by listings)
×1
StatTrak™ FAMAS | Bad Trip
Well-Worn
any lot
44.14 $
at 44.14
if this one runs out, you can take
StatTrak™ AWP | Printstream (Battle-Scarred) — 60.69 $+16.55 $ per item · on the market 14 · buy0.4500–1.0000
SteamBuyLis-SkinsCSFloatMarket.CSGOPurchase detailsf′ (normalized) 0.450000wear 0.3800–0.4500on the market 25 · good ≈ 25Lis-Skins: suitable 50 of 50 · from 38.45 $ (float 0.3922) · craft not before 31.10 · data 23.10 13:22 MSK
×2
StatTrak™ FAMAS | Bad Trip
Battle-Scarred
any lot
109.30 $
at 54.65
if this one runs out, you can take
StatTrak™ AWP | Printstream (Battle-Scarred) — 60.69 $+6.04 $ per item · on the market 14 · buy0.4500–1.0000
SteamBuyLis-SkinsCSFloatMarket.CSGOPurchase detailsf′ (normalized) 1.000000wear 0.4500–1.0000on the market 10 · good ≈ 10Lis-Skins: suitable 43 of 43 · from 38.71 $ (float 0.7695) · craft not before 31.10 · data 23.10 13:22 MSK
×2
StatTrak™ M4A4 | The Battlestar
Well-Worn
any lot
100.03 $
at 50.01
if this one runs out, you can take
StatTrak™ AK-47 | Fuel Injector (Battle-Scarred) — 220.63 $+170.61 $ per item · on the market 6 · buy0.4500–1.0000
SteamBuyLis-SkinsCSFloatMarket.CSGOPurchase detailsf′ (normalized) 0.703125wear 0.3800–0.4500on the market 3 · good ≈ 3Lis-Skins: suitable 1 of 1 · from 51.59 $ (float 0.3804) · craft not before 31.10 · data 23.10 13:22 MSK
Set · 5 pcs253.48 $
−122.84
(−48.5%)
!
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 4 шт., годных ≈3≈ market listings are not enough for even one contract (by listings)
×1
StatTrak™ FAMAS | Bad Trip
Battle-Scarred
any lot
54.65 $
at 54.65
if this one runs out, you can take
StatTrak™ AWP | Printstream (Battle-Scarred) — 60.69 $+6.04 $ per item · on the market 14 · buy0.4500–1.0000
SteamBuyLis-SkinsCSFloatMarket.CSGOPurchase detailsf′ (normalized) 1.000000wear 0.4500–1.0000on the market 10 · good ≈ 10Lis-Skins: suitable 43 of 43 · from 38.71 $ (float 0.7695) · craft not before 31.10 · data 23.10 13:22 MSK
×4
StatTrak™ M4A4 | The Battlestar
Well-Worn
any lot
200.06 $
at 50.01
if this one runs out, you can take
StatTrak™ AK-47 | Fuel Injector (Battle-Scarred) — 220.63 $+170.61 $ per item · on the market 6 · buy0.4500–1.0000
SteamBuyLis-SkinsCSFloatMarket.CSGOPurchase detailsf′ (normalized) 0.703125wear 0.3800–0.4500on the market 3 · good ≈ 3Lis-Skins: suitable 1 of 1 · from 51.59 $ (float 0.3804) · craft not before 31.10 · data 23.10 13:22 MSK
Steam★ StatTrak™ Bowie Knife | Fade (Factory New)net 232.71 $The Wildfire Collectionsells 3 a weekrarely sells: 5 a month — calculated at the buy order 267.62 $sell now to a buy order: 267.68 $
(you get 232.76 $)) · buy orders: 425
sell on Market.CSGO: 260.54 $ to your card
cheapest lot 285.68 · lots 5
on CSFloat: from 283.08 $listings: 8
on CS.Money: ~ 245.02 $
on Lis-Skins: from 243.71 $listings: 16
rarely sells: 1 a month — calculated at the buy order 188.20 $sell now to a buy order: 186.81 $
(you get 162.44 $)) · buy orders: 87
sell on Market.CSGO: 203.94 $ to your card
cheapest lot 223.62 · lots 4CSFloat: 2 listings, too few, no price
on Lis-Skins: from 214.99 $listings: 3
rarely sells: 0 a month — calculated at the buy order 103.94 $sell now to a buy order: 103.17 $
(you get 89.71 $)) · buy orders: 91
sell on Market.CSGO: 246.80 $ to your card
cheapest lot 270.62 · lots 4Lis-Skins: 1 listings, too few, no price
BS costs more than WW: 111.45 $ versus 84.42 $ — calculated at the price of WWrarely sells: 3 a month — calculated at the current 111.45 $, buy orders and sales are not lowersell now to a buy order: 85.18 $
(you get 74.07 $)) · buy orders: 74
sell on Market.CSGO: 97.64 $ to your card
cheapest lot 107.06 · lots 5CSFloat: 1 listings, too few, no price
on Lis-Skins: from 106.51 $listings: 4
BS costs more than WW: 209.59 $ versus 189.99 $ — calculated at the price of WWrarely sells: 2 a month — calculated at the buy order 209.59 $sell now to a buy order: 209.64 $
(you get 182.29 $)) · buy orders: 110
sell on Market.CSGO: 183.97 $ to your card
cheapest lot 201.72 · lots 3
on CSFloat: from 180.21 $listings: 7
on Lis-Skins: from 194.63 $listings: 4
rarely sells: 1 a month — calculated at the buy order 56.41 $sell now to a buy order: 55.97 $
(you get 48.67 $)) · buy orders: 123Market.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: 2 listings, too few, no price
BS costs more than WW: 134.26 $ versus 112.34 $ — calculated at the price of WWrarely sells: 1 a month — calculated at the buy order 134.26 $sell now to a buy order: 133.22 $
(you get 115.84 $)) · buy orders: 131Market.CSGO: 1 listings, too few, no priceCSFloat: price does not match Steam and is not shown
on CS.Money: ~ 183.90 $Lis-Skins: 1 listings, too few, no price
Steam★ StatTrak™ Bowie Knife | Night (Battle-Scarred)The Wildfire Collectionsell now to a buy order: 75.00 $
(you get 65.22 $)) · buy orders: 95Market.CSGO: 2 listings, too few, no priceCSFloat: 1 listings, too few, no price
rarely sells: 1 a month — calculated at the buy order 59.30 $sell now to a buy order: 59.01 $
(you get 51.31 $)) · buy orders: 93not listed on Market.CSGO right nowCSFloat: 2 listings, too few, no price
BS costs more than FT: 60.30 $ versus 45.12 $ — calculated at the price of FTrarely sells: 0 a month — calculated at the buy order 60.30 $sell now to a buy order: 48.11 $
(you get 41.84 $)) · buy orders: 53Market.CSGO: 1 listings, too few, no priceCSFloat: 2 listings, too few, no priceLis-Skins: 1 listings, too few, no price
Steam★ StatTrak™ Bowie Knife | Urban Masked (Battle-Scarred)net 64.46 $The Wildfire Collectionno price on Steam, listing on CSFloat from 65.77 $listings 5 · you get 64.46 $ (2.0% fee from the price)ignoring float and patternBS costs more than WW: 91.00 $ versus 65.77 $ — calculated at the price of WWsell now to a buy order: 93.77 $
(you get 81.54 $)) · buy orders: 70
sell on Market.CSGO: 89.34 $ to your card
cheapest lot 97.96 · lots 3
on CSFloat: from 91.00 $listings: 5
rarely sells: 2 a month — calculated at the buy order 90.26 $sell now to a buy order: 89.96 $
(you get 78.22 $)) · buy orders: 193
sell on Market.CSGO: 118.45 $ to your card
cheapest lot 129.88 · lots 5CSFloat: 2 listings, too few, no price
on Lis-Skins: from 116.74 $listings: 35
month average 218.15 $, sold 13 — it costs more now, the calculation uses the averagesell now to a buy order: 200.31 $
(you get 174.18 $)) · buy orders: 185
sell on Market.CSGO: 199.59 $ to your card
cheapest lot 218.85 · lots 18price ignores the phase
on CSFloat: from 191.09 $listings: 44
Steam★ StatTrak™ Survival Knife | Marble Fade (Factory New)net 115.91 $sells 6 a weeknow 133.29 $ — cheaper than the month average 161.10 $sell now to a buy order: 140.79 $
(you get 122.43 $)) · buy orders: 162
sell on Market.CSGO: 144.02 $ to your card
cheapest lot 157.91 · lots 16
on CSFloat: from 133.48 $listings: 25
on CS.Money: ~ 136.34 $
on Lis-Skins: from 133.43 $listings: 52
month average 133.94 $, sold 22 — it costs more now, the calculation uses the averagesell now to a buy order: 120.95 $
(you get 105.18 $)) · buy orders: 187
sell on Market.CSGO: 123.16 $ to your card
cheapest lot 135.04 · lots 12
on CSFloat: from 113.71 $listings: 17
on CS.Money: ~ 112.49 $
on Lis-Skins: from 109.88 $listings: 74
WW costs more than MW: 69.87 $ versus 65.04 $ — calculated at the price of MWrarely sells: 5 a month — calculated at the buy order 69.87 $sell now to a buy order: 69.87 $
(you get 60.76 $)) · buy orders: 48
sell on Market.CSGO: 81.95 $ to your card
cheapest lot 89.85 · lots 4CSFloat: 2 listings, too few, no price
on Lis-Skins: from 103.89 $listings: 3
month average 56.53 $, sold 37 — it costs more now, the calculation uses the averagesell now to a buy order: 53.22 $
(you get 46.28 $)) · buy orders: 203
sell on Market.CSGO: 49.65 $ to your card
cheapest lot 54.44 · lots 11
on CSFloat: from 47.57 $listings: 15
on CS.Money: ~ 47.42 $
on Lis-Skins: from 45.18 $listings: 48
BS costs more than WW: 73.55 $ versus 69.99 $ — calculated at the price of WWnow 73.55 $ — cheaper than the month average 83.63 $sell now to a buy order: 77.83 $
(you get 67.68 $)) · buy orders: 66
sell on Market.CSGO: 79.94 $ to your card
cheapest lot 87.65 · lots 4
on Lis-Skins: from 90.66 $listings: 3
Steam★ StatTrak™ Paracord Knife | Doppler (Factory New)net 244.02 $sells 3 a weeknow 280.62 $ — cheaper than the month average 285.17 $sell now to a buy order: 256.98 $
(you get 223.46 $)) · buy orders: 189
sell on Market.CSGO: 232.24 $ to your card
cheapest lot 254.65 · lots 25price ignores the phase
on CSFloat: from 213.99 $listings: 60
Steam★ StatTrak™ Paracord Knife | Marble Fade (Factory New)net 147.48 $sells 5 a weeknow 169.60 $ — cheaper than the month average 180.01 $sell now to a buy order: 149.23 $
(you get 129.77 $)) · buy orders: 149
sell on Market.CSGO: 162.70 $ to your card
cheapest lot 178.39 · lots 16
on CSFloat: from 144.47 $listings: 15
on CS.Money: ~ 155.34 $
on Lis-Skins: from 156.51 $listings: 35
Steam★ StatTrak™ Paracord Knife | Tiger Tooth (Factory New)net 96.59 $sells 11 a weeknow 111.07 $ — cheaper than the month average 143.24 $sell now to a buy order: 132.79 $
(you get 115.47 $)) · buy orders: 132
sell on Market.CSGO: 128.03 $ to your card
cheapest lot 140.39 · lots 8
on CSFloat: from 120.00 $listings: 16
on CS.Money: ~ 119.82 $
on Lis-Skins: from 130.58 $listings: 19
WW costs more than FT: 67.48 $ versus 59.52 $ — calculated at the price of FTrarely sells: 3 a month — calculated at the buy order 67.48 $sell now to a buy order: 67.11 $
(you get 58.36 $)) · buy orders: 58Market.CSGO: 2 listings, too few, no priceLis-Skins: 1 listings, too few, no price
Steam★ StatTrak™ Paracord Knife | Rust Coat (Battle-Scarred)net 46.91 $sells 6 a weeknow 53.95 $ — cheaper than the month average 60.08 $sell now to a buy order: 54.08 $
(you get 47.03 $)) · buy orders: 124Market.CSGO: 1 listings, too few, no price
on CSFloat: from 48.20 $listings: 8
on CS.Money: ~ 52.69 $
on Lis-Skins: from 50.00 $listings: 42
BS costs more than WW: 83.40 $ versus 66.64 $ — calculated at the price of WWrarely sells: 9 a month — calculated at the buy order 83.40 $sell now to a buy order: 82.99 $
(you get 72.17 $)) · buy orders: 60
sell on Market.CSGO: 83.10 $ to your card
cheapest lot 91.12 · lots 8
on CSFloat: from 83.89 $listings: 3
on CS.Money: ~ 76.74 $
on Lis-Skins: from 81.40 $listings: 8
rarely sells: 3 a month — calculated at the buy order 425.18 $sell now to a buy order: 423.04 $
(you get 367.86 $)) · buy orders: 207
sell on Market.CSGO: 374.59 $ to your card
cheapest lot 410.74 · lots 11price ignores the phase
on CSFloat: from 340.11 $listings: 57
now 309.72 $ — cheaper than the month average 315.95 $sell now to a buy order: 251.77 $
(you get 218.93 $)) · buy orders: 140
sell on Market.CSGO: 231.86 $ to your card
cheapest lot 254.24 · lots 9
on CSFloat: from 213.25 $listings: 21
on CS.Money: ~ 221.97 $
on Lis-Skins: from 229.40 $listings: 36
now 223.90 $ — cheaper than the month average 239.94 $sell now to a buy order: 214.63 $
(you get 186.63 $)) · buy orders: 150
sell on Market.CSGO: 195.15 $ to your card
cheapest lot 213.98 · lots 21
on CSFloat: from 175.65 $listings: 10
on CS.Money: ~ 189.77 $
on Lis-Skins: from 180.79 $listings: 49
rarely sells: 3 a month — calculated at the buy order 127.01 $sell now to a buy order: 127.23 $
(you get 110.64 $)) · buy orders: 93
sell on Market.CSGO: 146.93 $ to your card
cheapest lot 161.11 · lots 4CSFloat: 2 listings, too few, no priceLis-Skins: 2 listings, too few, no price
now 102.99 $ — cheaper than the month average 111.08 $sell now to a buy order: 90.99 $
(you get 79.12 $)) · buy orders: 119
sell on Market.CSGO: 84.98 $ to your card
cheapest lot 93.18 · lots 17
on CSFloat: from 86.79 $listings: 11
on CS.Money: ~ 84.59 $
on Lis-Skins: from 78.74 $listings: 57
BS costs more than WW: 132.00 $ versus 126.54 $ — calculated at the price of WWmonth average 132.00 $, sold 18 — it costs more now, the calculation uses the averagesell now to a buy order: 127.49 $
(you get 110.87 $)) · buy orders: 64
sell on Market.CSGO: 122.68 $ to your card
cheapest lot 134.51 · lots 7CSFloat: 1 listings, too few, no price
on CS.Money: ~ 110.84 $
on Lis-Skins: from 115.40 $listings: 16
rarely sells: 6 a month — calculated at the buy order 606.52 $sell now to a buy order: 678.85 $
(you get 590.30 $)) · buy orders: 342
sell on Market.CSGO: 648.55 $ to your card
cheapest lot 711.13 · lots 17price ignores the phase
on CSFloat: from 584.54 $listings: 64
Steam★ StatTrak™ Skeleton Knife | Marble Fade (Factory New)net 380.16 $sells 4 a weeknow 437.18 $ — cheaper than the month average 516.86 $sell now to a buy order: 424.60 $
(you get 369.22 $)) · buy orders: 165
sell on Market.CSGO: 369.00 $ to your card
cheapest lot 404.61 · lots 12
on CSFloat: from 369.99 $listings: 23
on CS.Money: ~ 392.32 $
on Lis-Skins: from 363.48 $listings: 21
Steam★ StatTrak™ Skeleton Knife | Tiger Tooth (Factory New)net 329.31 $sells 2 a weeknow 378.71 $ — cheaper than the month average 385.03 $sell now to a buy order: 324.68 $
(you get 282.33 $)) · buy orders: 163
sell on Market.CSGO: 320.93 $ to your card
cheapest lot 351.90 · lots 12
on CSFloat: from 287.19 $listings: 19
on CS.Money: ~ 321.80 $
on Lis-Skins: from 296.58 $listings: 40
WW costs more than FT: 201.01 $ versus 127.63 $ — calculated at the price of FTrarely sells: 3 a month — calculated at the buy order 201.01 $sell now to a buy order: 199.99 $
(you get 173.90 $)) · buy orders: 77Market.CSGO: 1 listings, too few, no price
on CS.Money: ~ 199.74 $
now 148.58 $ — cheaper than the month average 167.09 $sell now to a buy order: 142.00 $
(you get 123.48 $)) · buy orders: 118
sell on Market.CSGO: 124.99 $ to your card
cheapest lot 137.05 · lots 17
on CSFloat: from 118.99 $listings: 13
on CS.Money: ~ 128.84 $
on Lis-Skins: from 125.28 $listings: 36
BS costs more than WW: 218.78 $ versus 217.10 $ — calculated at the price of WWrarely sells: 5 a month — calculated at the buy order 218.78 $sell now to a buy order: 218.82 $
(you get 190.27 $)) · buy orders: 157
sell on Market.CSGO: 192.31 $ to your card
cheapest lot 210.86 · lots 4
on CSFloat: from 208.85 $listings: 4
on CS.Money: ~ 188.42 $Lis-Skins: 1 listings, too few, no price
Steam★ StatTrak™ Paracord Knifenet 47.97 $sells 19 a weeknow 55.16 $ — cheaper than the month average 75.06 $sell now to a buy order: 66.21 $
(you get 57.58 $)) · buy orders: 232
sell on Market.CSGO: 57.82 $ to your card
cheapest lot 63.40 · lots 19
on CSFloat: from 54.72 $listings: 19
on CS.Money: ~ 59.71 $
on Lis-Skins: from 56.61 $listings: 55
Steam★ StatTrak™ Survival Knifenet 57.58 $sells 14 a weeknow 66.21 $ — cheaper than the month average 71.41 $sell now to a buy order: 59.20 $
(you get 51.48 $)) · buy orders: 164
sell on Market.CSGO: 55.60 $ to your card
cheapest lot 60.97 · lots 30
on CSFloat: from 50.47 $listings: 18
on CS.Money: ~ 56.98 $
on Lis-Skins: from 52.90 $listings: 54
now 146.17 $ — cheaper than the month average 163.48 $sell now to a buy order: 140.99 $
(you get 122.60 $)) · buy orders: 218
sell on Market.CSGO: 119.65 $ to your card
cheapest lot 131.19 · lots 13
on CSFloat: from 113.91 $listings: 20
on CS.Money: ~ 128.16 $
on Lis-Skins: from 114.42 $listings: 48
now 267.56 $ — cheaper than the month average 279.10 $sell now to a buy order: 238.81 $
(you get 207.66 $)) · buy orders: 302
sell on Market.CSGO: 189.89 $ to your card
cheapest lot 208.21 · lots 16
on CSFloat: from 204.22 $listings: 21
on CS.Money: ~ 232.26 $
on Lis-Skins: from 206.55 $listings: 54
float markup by input
how many times more the lots with the needed float cost
StatTrak™ FAMAS | Bad Trip (Battle-Scarred) × 2100% of the wear range fits×0.91109.30 → 99.60 $
StatTrak™ M4A4 | The Battlestar (Field-Tested) × 2100% of the wear range fits×1.0195.90 → 96.43 $
StatTrak™ M4A4 | The Battlestar (Well-Worn) × 1100% of the wear range fits×1.1050.01 → 55.15 $
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−158.12 $a worse week happens one time in ten
In a typical week−144.12 $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 Fever 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.