Sale 1:

https://backpack.tf/profiles/76561198035701234#!/compare/1531699200/1531785600

https://backpack.tf/profiles/76561198044992165#!/compare/1531612800/1531699200

untrace.

Sale 2:

https://backpack.tf/profiles/76561198044992165#!/compare/1531785600/1531872000

Bulk for Tylorean

Sale 3:

https://backpack.tf/profiles/76561198053720151#!/compare/1531872000/1531958400

https://backpack.tf/profiles/76561198826773189#!/compare/1531872000/1531958400

Can only trace 5 keys, not using.

Sale 4:

https://backpack.tf/profiles/76561198826773189#!/compare/1532131200/1532217600

https://backpack.tf/profiles/76561198214364347#!/compare/1532044800/1532304000

Sold with 1 key for C9 Conquistador(12)

Total is 11 keys

Sale 5:

https://backpack.tf/profiles/76561198214364347#!/compare/1532044800/1532304000

https://backpack.tf/profiles/76561198112066584#!/compare/1532217600/1532304000

Sold for CPS Viewfinder

Use there.

Sale 6:

https://backpack.tf/profiles/76561197960984512#!/compare/1532908800/1532995200

https://backpack.tf/profiles/76561198112966233#!/compare/1532822400/1532995200

Sold for 10 keys + ~1 key in sweets

Total is 11 keys

Sale 7:

https://backpack.tf/profiles/76561198112966233#!/compare/1532822400/1532995200

https://backpack.tf/profiles/76561198815542934#!/compare/1531872000/1532995200

Sold for Blizzardy Airdog(12.5)

Sale 8:

https://backpack.tf/profiles/76561198027987935#!/compare/1533340800/1533945600

https://marketplace.tf/items/184;5;u65

Sold for 32 USD

Keys at 1.90 USD

Total is 16.84 keys

Sale 9:

https://backpack.tf/profiles/76561198156255538#!/compare/1532995200/1533081600

Use on Nano

Total Sales @:

11, 11, 12.5, 16.84 keys

https://i.imgur.com/krjJ2tC.png

Buyers up to 9 keys,

Seller for 13 keys for a week. --> https://backpack.tf/item/1657524437

Taking 11-13 keys.