Sale 1:

https://backpack.tf/profiles/76561198337046693#!/compare/1586563200/1587427200

https://backpack.tf/profiles/76561198337734785#!/compare/1586822400/1586908800

QS

Sale 2:

https://backpack.tf/profiles/76561198337734785#!/compare/1586995200/1587081600

https://backpack.tf/profiles/76561198069410757#!/compare/1586995200/1587081600

Sold for ~8.5 keys

sale 3:

https://backpack.tf/profiles/76561198069410757#!/compare/1587168000/1587254400

https://backpack.tf/profiles/76561198196410274#!/compare/1587168000/1587254400

Bulk

sale 4:

https://backpack.tf/profiles/76561198196410274#!/compare/1587254400/1587340800

https://backpack.tf/profiles/76561198142251077#!/compare/1587168000/1587254400

Untrace

sale 5:

https://backpack.tf/profiles/76561198142251077#!/compare/1587254400/1587340800

https://backpack.tf/profiles/76561198312403898#!/compare/1587254400/1587340800

Sold with ~1.5 keys in sweets for G Fetti Festivizer

Festivizer Mini:

https://backpack.tf/suggestion/5eaa1e9dec55a746b334df5a

Suggestion for 11.5 keys

Total is 10 keys

sale 6:

https://backpack.tf/profiles/76561198312403898#!/compare/1587340800/1587427200

https://backpack.tf/profiles/76561198291803275#!/compare/1587427200/1587513600

Sold for Stormy Rag + ~1.5 keys in sweets

use there

Sale 7:

https://backpack.tf/profiles/76561198291803275#!/compare/1587427200/1587513600

https://backpack.tf/profiles/76561198196728195#!/compare/1587340800/1587513600

Sold for ~8.5 keys in sweets (traced through sellers fallback inv, items appear there.

sale 8:

https://backpack.tf/profiles/76561198196728195#!/compare/1587513600/1587686400

https://backpack.tf/profiles/76561198007660411#!/compare/1587600000/1587686400

Keys or Birdcage, can't tell.

Total sales @:

8.5, 8.5, 10 keys

Taking 8.5 - 10 keys.