Update!

Mini for: https://backpack.tf/suggestion/6608f3e202268b05580724de

Sale 1: https://backpack.tf/profiles/76561198026030175#!/compare/1705795200/1710028800

https://backpack.tf/profiles/76561199026390261#!/compare/1709942400/1710028800

134 pure + metal

Sale 2: https://backpack.tf/profiles/76561199026390261#!/compare/1710720000/1710806400

https://backpack.tf/profiles/76561198310972287#!/compare/1710720000/1710806400

Only 74 keys match

Sale 4: https://backpack.tf/profiles/76561198161130473#!/compare/1713916800/1714003200

https://backpack.tf/profiles/76561198004702936#!/compare/1714003200/1714089600

Sold with 10 keys for a Haunted Ghosts Team Captain (260 keys)

260 - 10 = 250

Sale 5: https://backpack.tf/profiles/76561198092381061#!/compare/1710720000/1710892800

https://backpack.tf/profiles/76561198148471751#!/compare/1710547200/1710892800

Bulk, use there.

Sale 6: https://backpack.tf/profiles/76561198148471751#!/compare/1713139200/1713225600

https://backpack.tf/profiles/76561198066886014#!/compare/1713139200/1713225600

Sold for 250 pure + a Bill's Hat (~4 keys)

250 + 4 = 254

Sale 7: https://backpack.tf/profiles/76561198311809129#!/compare/1711238400/1711411200

https://backpack.tf/profiles/76561199183171982#!/compare/1711324800/1711411200

Untrace

Sale 8: https://backpack.tf/profiles/76561199183171982#!/compare/1712016000/1712102400

https://backpack.tf/profiles/76561198305806575#!/compare/1707868800/1712793600

Tf?

New sale (credits to kid named fragger): https://backpack.tf/profiles/76561198043566764#!/compare/1716336000/1716768000

The other side (credits to me): https://backpack.tf/profiles/76561198154838247#!/compare/1716163200/1716768000

Sold for a Stellar Ascent Mean Captain (~173 keys) + a Strange Professional Killstreak Australium Rocket Launcher (85 keys) + a Cool Festivized Professional Killstreak Gingerbread Winner Soda Popper (Battle Scarred) (22 keys)

173 + 85 + 22 = 280, buyout was 300: https://i.imgur.com/r3T00o8.png

Mini for the Soda Pop: https://backpack.tf/suggestion/66586883f90d8239520473b5

Considering the user themselves who got the Soda in selling the BF Starlight dumped for 21 right away, I'm taking 21-23 as the mini here.

Classies: https://i.imgur.com/r3T00o8.png. Sales: 134, 250, 254 and 280. 250-280.