Mascaras would approve

Sale 1:

https://backpack.tf/profiles/76561198133046859#!/compare/1543795200/1543968000

https://backpack.tf/profiles/76561198054758757#!/compare/1543536000/1544918400

Bulk

Sale 2:

https://backpack.tf/profiles/76561198054758757#!/compare/1547078400/1547164800

https://backpack.tf/profiles/76561198180769950#!/compare/1547078400/1547164800

Sold for 40 pure

Sale 3:

https://backpack.tf/profiles/76561198180769950#!/compare/1548115200/1548374400

https://backpack.tf/profiles/76561198192602363#!/compare/1548288000/1548374400

Sold for 33 pure

Sale 4:

https://backpack.tf/profiles/76561198194564966#!/compare/1543795200/1543881600

https://backpack.tf/profiles/76561198093438754#!/compare/1543363200/1543881600

Bulky

Sale 5:

https://backpack.tf/profiles/76561198093438754#!/compare/1545696000/1545782400

https://backpack.tf/profiles/76561198057725524#!/compare/1545696000/1545782400

Sold for 37 keys

Sale 6:

https://backpack.tf/profiles/76561198057725524#!/compare/1546300800/1546560000

https://backpack.tf/profiles/76561198306288794#!/compare/1546473600/1546560000

Bulk

Sale 7:

https://backpack.tf/profiles/76561198306288794#!/compare/1546905600/1546992000

https://backpack.tf/profiles/76561198413444124#!/compare/1546819200/1547078400

Sold for FBoA Carlton + 34 keys

Carlton Mini:

https://backpack.tf/suggestion/5c7b852b678072616f78caa2

Suggestion for 8.5 keys

Total is 42.5 keys

Sale 8:

https://backpack.tf/profiles/76561198058223674#!/compare/1542672000/1543968000

https://backpack.tf/profiles/76561198317606171#!/compare/1543881600/1543968000

Sold for ~31 keys

Sale 9:

https://backpack.tf/profiles/76561198317606171#!/compare/1543968000/1544054400

https://backpack.tf/profiles/76561198259986634#!/compare/1543968000/1544054400

Sold for keys

Sale 10:

https://backpack.tf/profiles/76561198259986634#!/compare/1546128000/1546473600

https://backpack.tf/profiles/76561197992659090#!/compare/1546387200/1546473600

Sold for ~34 keys

Sale 11:

https://backpack.tf/profiles/76561197992659090#!/compare/1547769600/1547942400

https://backpack.tf/profiles/76561198401509004#!/compare/1547856000/1547942400

Untrace

Sale 12:

https://backpack.tf/profiles/76561198401509004#!/compare/1548720000/1548806400

https://backpack.tf/profiles/76561198074247207#!/compare/1548720000/1548979200

Untrace

Sale 13:

https://backpack.tf/profiles/76561198074247207#!/compare/1550707200/1550966400

https://backpack.tf/profiles/76561198163116031#!/compare/1550880000/1551052800

Sold for 40 keys

Sale 14, 15:

https://marketplace.tf/items/380;5;u62

$80.00 / $1.8 = 44.44 keys

$80.00 / $1.8 = 44.44 keys

Total sales @:

31, 33, 34, 37, 40, 40, 42.5, 44.44, 44.44 keys

Seller at 45 keys,

Buyers up to 37 keys

Gonna go with 40 - 44 keys.