Sale 1:

https://backpack.tf/profiles/76561198312583107#!/compare/1547164800/1547251200

https://backpack.tf/profiles/76561198340634356#!/compare/1547164800/1547251200

Bulk

Sale 2:

https://backpack.tf/profiles/76561198027458189#!/compare/1550448000/1550620800

https://backpack.tf/profiles/76561198044684270#!/compare/1550361600/1550448000

Untrace

Sale 3:

https://backpack.tf/profiles/76561198021055079#!/compare/1546992000/1547078400

https://backpack.tf/profiles/76561197996306396#!/compare/1546992000/1547078400

Sold for 38 keys?

Sale 4:

https://backpack.tf/profiles/76561198160912600#!/compare/1544140800/1545955200

https://backpack.tf/profiles/76561198148843171#!/compare/1545868800/1545955200

Sold for Aussie FaN(12) + 1 key

Total is 13 keys

Sale 5:

https://backpack.tf/profiles/76561198148843171#!/compare/1545955200/1546041600

https://backpack.tf/profiles/76561198070652981#!/compare/1545955200/1546041600

Sold for 17 keys + ~2 keys in sweets

Total is 19 keys

Sale 6:

https://backpack.tf/profiles/76561198070652981#!/compare/1546041600/1546128000

https://backpack.tf/profiles/76561198198896481#!/compare/1546041600/1546128000

Sold for 14 keys

Sale 7:

https://backpack.tf/profiles/76561198198896481#!/compare/1546041600/1546128000

https://backpack.tf/profiles/76561198083520022#!/compare/1546041600/1546128000

....Bulk?

Sale 8:

https://backpack.tf/profiles/76561198083520022#!/compare/1546300800/1548633600

https://backpack.tf/profiles/76561198280357510#!/compare/1548374400/1548460800

Untrace

Sale 9:

https://backpack.tf/profiles/76561198078740764#!/compare/1548547200/1548806400

https://backpack.tf/profiles/76561198280357510#!/compare/1548460800/1548547200

Sold with 3 keys in sweets for EOF YWN

YWN Mini:

https://backpack.tf/suggestion/5c80b56ad38172651126d4c3

Suggestion for 22 keys

Total is 19 keys

Sale 10:

https://backpack.tf/profiles/76561198078740764#!/compare/1549929600/1551484800

https://backpack.tf/profiles/76561198040073503#!/compare/1549929600/1550620800

Sold for 13 keys

Sale 11:

https://marketplace.tf/items/1110;5;u3022

$45.00 / $1.81 = 24.86 keys

Total sales @:

13, 13, 14, 19, 19, 24.86, 38 keys

Buyers up to 16 keys,

Sellers down to 25 keys,

taking 19 - 25 keys