Item 1

https://backpack.tf/item/12873386683

Sale 1

Likely a scrap auction, no clue how much tho

Sale 2

https://backpack.tf/profiles/76561198436821198#!/compare/1683072000/1683158400

https://backpack.tf/profiles/76561198364363089#!/compare/1683072000/1683158400

Can't say for sure here

Item 2

https://backpack.tf/item/12659781691

Sale 3

https://backpack.tf/profiles/76561198795596604#!/compare/1682553600/1685404800

https://backpack.tf/profiles/76561197992807229#!/compare/1682812800/1683763200

No clue

Item 3

https://backpack.tf/item/11748883924

Sale 4

https://backpack.tf/profiles/76561198092692658#!/compare/1687392000/1687996800

https://backpack.tf/profiles/76561197998103691#!/compare/1687910400/1687996800

18 keys + Strange Festive Shotgun + Genuine Professional Killstreak Freedom Staff

18 + 6.55 + 1.85 = ~26 keys

Sale 5

https://backpack.tf/profiles/76561197998103691#!/compare/1688688000/1688774400

https://backpack.tf/profiles/76561198917235918#!/compare/1689033600/1689120000

Bulk for a Burning Flames Merc's Mohawk

Item 4

https://backpack.tf/item/10377986864

Sale 6

https://backpack.tf/profiles/76561198337734785#!/compare/1682812800/1682899200

https://backpack.tf/profiles/76561198258168272#!/compare/1682812800/1682899200

Can't say for sure

Sale 7

https://backpack.tf/profiles/76561198258168272#!/compare/1684195200/1684281600

https://backpack.tf/profiles/76561198033140830#!/compare/1617753600/1687910400

Can't say for sure

Item 5

https://backpack.tf/item/10348890728

Ignoring mp.tf / bot transfers

Sale 8

https://backpack.tf/profiles/76561198164651434#!/compare/1686873600/1687046400

https://backpack.tf/profiles/76561198360026912#!/compare/1686700800/1686873600

Untrace on seller side?

Sale 9

https://backpack.tf/profiles/76561198360026912#!/compare/1687564800/1687910400

https://backpack.tf/profiles/76561199059698603#!/compare/1687651200/1687737600

Can only match a scrap

Sale 10

https://backpack.tf/profiles/76561199059698603#!/compare/1687737600/1687824000

https://backpack.tf/profiles/76561198286140377#!/compare/1687824000/1687910400

Looks like ~27 keys

Item 6

https://backpack.tf/item/9967648427

Covering mp.tf at the end

Item 7

https://backpack.tf/item/5390448733

Can't use this

Mp.tf

https://marketplace.tf/items/tf2/30827;5;u14

$66.99 / $2.10 = ~32 keys (Apr 21)

$66.99 / $2.03 = ~33 keys (May 8)

$66.99 / $2.02 = ~33 keys (May 21)

$66.99 / $1.99 = ~34 keys (Jun 27)

Total Sales

26, 27, 32, 33, 34

https://imgur.com/a/7YsNfFQ

Mp.tf sales look a bit high here

Taking 26 - 27 keys c: