Sale 1:

https://backpack.tf/profiles/76561198381136238#!/compare/1546473600/1546560000

https://backpack.tf/profiles/76561198075774444#!/compare/1546387200/1546473600

Sold for Strange Normal Flamethrower

Use there.

Sale 2:

https://backpack.tf/profiles/76561198075774444#!/compare/1546473600/1546560000

https://backpack.tf/profiles/76561198123224716#!/compare/1546473600/1546560000

Sold for ~35 keys?

Sale 3:

https://backpack.tf/profiles/76561198123224716#!/compare/1546560000/1546732800

https://backpack.tf/profiles/76561198019140582#!/compare/1546646400/1546732800

Sold for Cauldron Capotain + Bubbling Brain Bowl + CPS Attendant

Nothing on the Attendant or Bowl

Sale 4:

https://backpack.tf/profiles/76561198019140582#!/compare/1547683200/1547769600

https://backpack.tf/profiles/76561198288392494#!/compare/1547596800/1547769600

Sold for KaW Falkrik + Planets Whoopee(9.75) + 10 keys

Falkirk Mini:

https://backpack.tf/suggestion/5c65f3d9cf6c755ff72fbd1c

Suggestion for 31 keys

Total is 51 keys

Sale 5:

https://backpack.tf/profiles/76561198288392494#!/compare/1547769600/1547942400

https://backpack.tf/profiles/76561198182213262#!/compare/1547769600/1547856000

Untrace, keys?

Sale 6:

https://marketplace.tf/items/30549;5;u15;strange

Sold for 114.99 USD

Keys at 1.76 USD

Total is 65.34 keys

Total sales @:

35, 51, 65.34 keys

going with 51 - 65 keys.