Sale 1:

https://backpack.tf/profiles/76561198412458800#!/compare/1543104000/1543276800

https://backpack.tf/profiles/76561198178223350#!/compare/1543017600/1543104000

Untrace, keys?

Sale 2:

https://backpack.tf/profiles/76561198178223350#!/compare/1543104000/1543190400

https://backpack.tf/profiles/76561198204215085#!/compare/1543017600/1543104000

Sold for ~8.5 keys

Sale 3:

https://backpack.tf/profiles/76561198204215085#!/compare/1543104000/1543190400

https://backpack.tf/profiles/76561198824203909#!/compare/1542931200/1543190400

Sold for Blizzardy Conq

Conq Mini:

https://backpack.tf/suggestion/5c42a0db44325a6dc31ce522

Suggestion for 11.5 keys

Sale 4:

https://backpack.tf/profiles/76561198824203909#!/compare/1543363200/1543536000

https://backpack.tf/profiles/76561197979490192#!/compare/1543449600/1543536000

Sold for Vivid Stove Pipe

Use there.

Sale 5:

https://backpack.tf/profiles/76561197979490192#!/compare/1543536000/1543622400

https://backpack.tf/profiles/76561198143969056#!/compare/1543622400/1543708800

Untrace

Sale 6:

https://backpack.tf/profiles/76561198143969056#!/compare/1544572800/1544659200

https://backpack.tf/profiles/76561198055066829#!/compare/1544400000/1544572800

Bulk

Sale 7:

https://backpack.tf/profiles/76561198055066829#!/compare/1544918400/1545004800

https://backpack.tf/profiles/76561198263476165#!/compare/1545004800/1545091200

Sold for 10 keys + negligible sweets

Sale 8:

https://backpack.tf/profiles/76561198263476165#!/compare/1545004800/1545091200

https://backpack.tf/profiles/76561198182213262#!/compare/1545004800/1545091200

Sold with spelled item + 4 keys for Strange G Fetti Chief

Use there

Sale 9:

https://backpack.tf/profiles/76561198182213262#!/compare/1547424000/1547596800

https://steamuserimages-a.akamaihd.net/ugc/963108970119218775/A7520F44E0E0FD1AF9790568B43BA468D7B4919F/

Sold for 12 keys

Total sales @:

8.5, 10, 11.5, 12 keys

Buyers up to 8.5 keys,

Taking 10 - 12 keys.