Sale 1:

https://marketplace.tf/items/30964;5;u16

$30 / $1.74 = 17.24 keys

Sale 2:

Broker transfer

https://backpack.tf/profiles/76561198065409820#!/compare/1547251200/1547337600

https://backpack.tf/profiles/76561198074625962#!/compare/1547251200/1547337600

Sale 3:

Bulk for Kill-a-Watt Pomade Prince

https://backpack.tf/profiles/76561198074625962#!/compare/1547942400/1548028800

https://backpack.tf/profiles/76561197970932773#!/compare/1547942400/1548028800

Sale 4:

6 pure [ under buyers ]

https://backpack.tf/profiles/76561198128073963#!/compare/1547596800/1547683200

https://backpack.tf/profiles/76561198002757046#!/compare/1547510400/1547596800

Sale 5:

untrace

https://backpack.tf/profiles/76561198172286358#!/compare/1546646400/1546732800

https://backpack.tf/profiles/76561198315588518#!/compare/1546646400/1546732800

Sale 6:

untrace

https://backpack.tf/profiles/76561198315588518#!/compare/1546819200/1546905600

https://backpack.tf/profiles/76561198171299002#!/compare/1546819200/1546905600

Sale 7:

untrace

https://backpack.tf/profiles/76561198050414618#!/compare/1542240000/1542326400

Sale 8:

No mini for Vintage Pro KS Scottish Resistance

Sold for Blizzardy Sky High Fly Guy + Vintage Pro KS Scottish Resistance + 2 pure

https://backpack.tf/profiles/76561198050414618#!/compare/1542844800/1542931200

https://backpack.tf/profiles/76561198324714018#!/compare/1542931200/1543017600

Sale 9:

13 pure

https://backpack.tf/profiles/76561198324714018#!/compare/1543795200/1544227200

https://backpack.tf/profiles/76561198269210627#!/compare/1544140800/1544227200

Sale 10:

untrace

https://backpack.tf/profiles/76561198144086275#!/compare/1543363200/1544313600

Sale 11:

11 pure

https://backpack.tf/profiles/76561198144086275#!/compare/1547078400/1547164800

https://backpack.tf/profiles/76561197993919776#!/compare/1547078400/1547164800

Sale 12:

untrace

https://backpack.tf/profiles/76561197993919776#!/compare/1547164800/1547251200

https://backpack.tf/profiles/76561197964171516#!/compare/1547164800/1547251200

========================================================================

Sales: 11, 13, 17

Excluding 17 as high compared to other sales and above unsolds: https://imgur.com/a/Kq9gh2w