Sale 1:

https://backpack.tf/profiles/76561198261509772#!/compare/1532995200/1533081600

https://backpack.tf/profiles/76561198087795898#!/compare/1532995200/1533081600

Sold for 14 keys + ~1 key in sweets

Total is 15 keys.

Sale 2:

https://backpack.tf/profiles/76561198087795898#!/compare/1532995200/1533081600

https://backpack.tf/profiles/76561198030343929#!/compare/1532995200/1533081600

Untrace.

Sale 3:

https://backpack.tf/profiles/76561198305676157#!/compare/1531094400/1531180800

https://backpack.tf/profiles/76561198071012049#!/compare/1531008000/1531094400

Keys, untrace.

Sale 4:

https://backpack.tf/profiles/76561198065409820#!/compare/1527552000/1527811200

https://backpack.tf/profiles/76561197998022978#!/compare/1527465600/1527811200

Untrace.

Sale 5:

https://backpack.tf/profiles/76561198065409820#!/compare/1527897600/1527984000

https://backpack.tf/profiles/76561198098563620#!/compare/1527897600/1527984000

Untrace.

Sale 6:

https://backpack.tf/profiles/76561198098563620#!/compare/1527897600/1527984000

https://backpack.tf/profiles/76561198194019015#!/compare/1527379200/1527984000

Sold with Beep Man(8.5) for Strange Dead Head(27)

Total is 18.5 keys

Sale 7:

https://backpack.tf/profiles/76561198080310253#!/compare/1528675200/1528761600

https://backpack.tf/profiles/76561198055847835#!/compare/1528675200/1528761600

Count 28 keys, considering current listing for 20 keys, calling high.

Sale 8:

https://backpack.tf/profiles/76561198305676157#!/compare/1527206400/1527292800

https://backpack.tf/profiles/76561198400127576#!/compare/1525392000/1527379200

Untrace.

Sale 9:

https://marketplace.tf/items/30984;5;u62

Sold for 30 USD

Keys at 1.94

Total is 15.46 keys

Total sales @:

15, 15.46, 18.5

Buyers up to 11 keys

Unsold for 20 for a month, 16 for 2 weeks +

https://backpack.tf/item/6851228461

https://backpack.tf/item/6978475658

https://backpack.tf/item/6783288379

Going with 15 keys flat.