Sale 1:

https://backpack.tf/profiles/76561198114544255#!/compare/1561075200/1561161600

https://backpack.tf/profiles/76561198057452720#!/compare/1561075200/1561161600

Bulk

Sale 2:

https://backpack.tf/profiles/76561198057452720#!/compare/1561507200/1561593600

https://backpack.tf/profiles/76561198282471428#!/compare/1561507200/1561593600

Bulk

Sale 3:

https://backpack.tf/profiles/76561198282471428#!/compare/1561507200/1561593600

https://backpack.tf/profiles/76561198044684270#!/compare/1561507200/1561593600

Sold for ~8 keys

Sale 4:

https://backpack.tf/profiles/76561198269395083#!/compare/1562284800/1562457600

https://backpack.tf/profiles/76561198080179568#!/compare/1562371200/1562457600

Untrace

Sale 5:

https://backpack.tf/profiles/76561198305494036#!/compare/1561075200/1561161600

https://bot.tf/stats/item?def=615&q=5&ef=Orbiting%20Fire&craft=1&aus=0&ks=0

Sold for ~9 keys

Sale 6:

https://backpack.tf/profiles/76561198049677507#!/compare/1563408000/1563494400

https://backpack.tf/profiles/76561198063153404#!/compare/1563667200/1563753600

https://backpack.tf/profiles/76561198062797298#!/compare/1563580800/1563840000

https://backpack.tf/profiles/76561198062797298#!/compare/1564531200/1565136000

Bulk

Sale 7:

https://backpack.tf/profiles/76561198062797298#!/compare/1564531200/1565136000

https://backpack.tf/profiles/76561198309563748#!/compare/1564444800/1564704000

Bulk

Sale 8:

https://backpack.tf/profiles/76561198363395191#!/compare/1564444800/1564531200

https://backpack.tf/profiles/76561198176878873#!/compare/1548892800/1564531200

Sold for 8 keys

Sale 9:

https://backpack.tf/profiles/76561198176878873#!/compare/1564704000/1565136000

https://backpack.tf/profiles/76561198108050155#!/compare/1565136000/1565222400

Sold for KaW Birdcage + ~1 key in sweets

use there'

Sale 10:

https://backpack.tf/profiles/76561198108050155#!/compare/1565308800/1565395200

https://backpack.tf/profiles/76561198083829532#!/compare/1565308800/1565395200

Sold for ~7 keys in sweets

Sale 11:

https://backpack.tf/profiles/76561198083829532#!/compare/1565308800/1565395200

https://backpack.tf/profiles/76561198127328235#!/compare/1562198400/1565395200

Bulky

Sale 12:

https://backpack.tf/item/1562221226

Untrace

Sale 13, 14:

https://marketplace.tf/items/tf2/615;5;u33

$14.21 / $1.83 = 7.77 keys

$17.99 / $1.82 = 9.88 keys <= https://backpack.tf/item/6455666073

Total sales @:

7, 7.77, 8, 8, 9, 9.88 keys

Buyers up to 7 keys,

gonna call 7 low,

taking 8 - 10 keys