Team: 4 Thundercats - Zeckatz.

Sale 1: Untrace.

https://backpack.tf/profiles/76561198089253101#!/compare/1573776000/1573862400

https://backpack.tf/profiles/76561198436581726#!/compare/1573862400/1573948800

Sale 2: ~13 Keys.

Sold with 4 keys for Dead Presidents Hat of Cards (16.5)

16.5 - 4 = 12.5 keys.

https://backpack.tf/profiles/76561198436581726#!/compare/1574467200/1574553600

https://backpack.tf/profiles/76561198137326742#!/compare/1574467200/1574553600

Dead Presidents Hat of Cards Mini:

https://backpack.tf/suggestion/5dfe4124d11dfa17117cc282

Sale 3: ~11 Keys Pure.

https://backpack.tf/profiles/76561198137326742#!/compare/1574553600/1574640000

https://backpack.tf/profiles/76561198215043429#!/compare/1574553600/1574640000

Sale 4: Bulk.

https://backpack.tf/profiles/76561198215043429#!/compare/1574726400/1574812800

https://backpack.tf/profiles/76561198098330939#!/compare/1574553600/1574812800

Sale 5: ~16 Keys. (Unsold for a while https://backpack.tf/item/7955677857 - calling high)

https://marketplace.tf/items/tf2/30344;5;u61 - Nov 19

$27.99 / $1.77 = 15.81 keys. - https://backpack.tf/item/3235829120 - No B/O.

Sales: 11/13/16

Going with 11-13 keys.