Sale #1:

https://backpack.tf/item/15026603080

https://backpack.tf/profiles/76561198037332962#!/compare/1730073600/1735776000 ~ this took 10 years to refresh but no matches

https://backpack.tf/profiles/76561199026390261#!/compare/1729987200/1730073600

Sale #2:

https://backpack.tf/profiles/76561199026390261#!/compare/1731715200/1731801600 ~ Snowblinded Winter Wrap Up + 6 keys + 0.66 ref matches

https://backpack.tf/profiles/76561198882886230#!/compare/1731715200/1731801600

Mini Wrap up:

https://backpack.tf/suggestion/67766a9fb0b83f911e0d3a89 ~ 47.5

= 53.5 keys

Sale #3:

https://backpack.tf/profiles/76561198882886230#!/compare/1733356800/1733443200 ~ Godlike Taunt: Unleashed Rage (44) + 37 keys + Rare Shine Bat Hat

https://backpack.tf/profiles/76561198271508598#!/compare/1733443200/1733529600 ~ 48 keys shown here

Mini bat hat:

https://backpack.tf/profiles/76561198151732820#!/compare/1729296000/1731110400 ~ 60 keys pure

https://backpack.tf/profiles/76561198271508598#!/compare/1731024000/1731110400

= 44 + 48 + 60 = 152

Sale #4:

https://backpack.tf/profiles/76561198271508598#!/compare/1733616000/1733702400 ~ added 55 keys ontop for a Amplifying Aura Taunt: Unleashed Rage

https://backpack.tf/profiles/76561198877565874#!/compare/1732838400/1733702400

Mini:

https://backpack.tf/profiles/76561198007904960#!/compare/1731456000/1731542400 ~ 100 keys pure

= 155

Sale #5:

https://backpack.tf/item/14999675220

https://backpack.tf/profiles/76561198259528152#!/compare/1729296000/1729382400 ~ no matches

https://backpack.tf/profiles/76561198139627699#!/compare/1729296000/1729382400 ~ ?

Sale #6:

https://backpack.tf/item/14922074550

https://backpack.tf/profiles/76561198341739575#!/compare/1728172800/1728345600

https://backpack.tf/profiles/76561198046069449#!/compare/1728259200/1728777600 ~ scm

Sale #7:

https://backpack.tf/item/15018925906

https://marketplace.tf/items/tf2/31441;5;u3176 ~ $199.99 Nov 27 / 1.8 = 111 keys

Sale #8:

https://backpack.tf/profiles/76561198363139866#!/compare/1730592000/1730764800 ~ no matches

https://backpack.tf/profiles/76561199082232195#!/compare/1730592000/1730678400 ~ scm?

Sale #9:

https://backpack.tf/item/14922068947 ~ unusualified

Sales @ 54, 111, 152, 155