Sale 1:

https://backpack.tf/profiles/76561198189000841#!/compare/1530662400/1534204800

https://backpack.tf/profiles/76561198081172172#!/compare/1530921600/1531094400

QS?

Sale 2:

https://backpack.tf/profiles/76561198081172172#!/compare/1531353600/1531440000

https://backpack.tf/profiles/76561198058210667#!/compare/1531267200/1531440000

Untrace.

Sale 3:

https://backpack.tf/profiles/76561198058210667#!/compare/1531958400/1532044800

https://backpack.tf/profiles/76561198376331369#!/compare/1531958400/1532044800

Sold for PE Sinner Shade

Use there.

Sale 4:

https://backpack.tf/profiles/76561198376331369#!/compare/1532044800/1532131200

https://backpack.tf/profiles/76561198196677807#!/compare/1531958400/1532131200

Untrace.

Sale 5:

https://backpack.tf/profiles/76561198196677807#!/compare/1532736000/1532822400

https://backpack.tf/profiles/76561198179201573#!/compare/1532649600/1532736000

Sold for G Fetti Spook Specs + 2 keys

Use there.

Sale 6:

https://backpack.tf/profiles/76561198179201573#!/compare/1532822400/1532995200

https://backpack.tf/profiles/76561198826120020#!/compare/1532908800/1532995200

Bulk

Sale 7:

https://backpack.tf/profiles/76561198826120020#!/compare/1532908800/1532995200

https://backpack.tf/profiles/76561198170427507#!/compare/1532822400/1532995200

Sold with 1 key for C9 Fortunate Son

Son Mini:

https://backpack.tf/suggestion/5b885dc144325a02c70050fa

Suggestion for 31.5 keys

Total is 30.5 keys

Sale 8:

https://backpack.tf/profiles/76561198170427507#!/compare/1533081600/1533168000

https://backpack.tf/profiles/76561198070688101#!/compare/1533081600/1533168000

Looks like CH Private Eye + ~2 keys in sweets

Eye Mini:

https://backpack.tf/suggestion/5b8807d4cf6c7529c404a5c6

Suggestion for 28.5 keys

Total is 30.5 keys

Sale 9:

https://backpack.tf/profiles/76561198070688101#!/compare/1533513600/1533600000

https://backpack.tf/profiles/76561198071920700#!/compare/1533513600/1533686400

Sold with 2 keys + Bubbling Slouch for Tesla Chill Chullo

Better used on Chullo?

Sale 10:

https://backpack.tf/profiles/76561198071920700#!/compare/1533686400/1533772800

https://backpack.tf/profiles/76561198206248880#!/compare/1533686400/1533772800

Sold for DP Fed Fightin' (40)

Total sales @:

30.5, 30.5, 40 keys

Let's take 31 - 40 keys.