Fire boat hat thing. Resugg

https://backpack.tf/item/272085297

Sales 1&2: $139.99 on marketplace https://marketplace.tf/items/tf2/179;5;u14

139.99 / 1.81 = 77.3, rounding to 77k

https://backpack.tf/item/277249086

Sale 3: 62 keys 14 ref

Buyer: https://backpack.tf/profiles/76561198042916207#!/compare/1626566400/1626652800

Seller: https://backpack.tf/profiles/76561199102407070#!/compare/1626480000/1626566400

https://backpack.tf/item/7956079793

Sale 4: Added 12 keys for a scorching connoisseurs cap, better used on the connoisseurs cap

Buyer: https://backpack.tf/profiles/76561198425761681#!/compare/1628726400/1628899200

Seller: https://backpack.tf/profiles/76561198121698432#!/compare/1628812800/1628899200

Sale 5: Untrace

Buyer: https://backpack.tf/profiles/76561198121698432#!/compare/1628640000/1628726400

Seller: https://backpack.tf/profiles/76561198255764866#!/compare/1628640000/1628726400

Sale 6: 89 keys 60 ref (90 keys total)

Buyer: https://backpack.tf/profiles/76561198255764866#!/compare/1628208000/1628294400

Seller: https://backpack.tf/profiles/76561199177971736#!/compare/1628208000/1628294400

Sale 7: Untrace (can’t check cannonball trade either, seller for it shows nothing)

Buyer: https://backpack.tf/profiles/76561199177971736#!/compare/1627862400/1628035200

Seller: https://backpack.tf/profiles/76561199110809353#!/compare/1627948800/1628035200

Sale 8: Untrace

Buyer: https://backpack.tf/profiles/76561199084784906#!/compare/1627084800/1627430400

Seller: https://backpack.tf/profiles/76561198964339727#!/compare/1627171200/1628553600

Sale 9: Sold for 74 keys

https://backpack.tf/profiles/76561198014430171#!/compare/1635033600/1635120000

https://backpack.tf/profiles/76561198425761681#!/compare/1635033600/1635120000

Sale 10: Sold for 80 keys (right after sale 9)

https://backpack.tf/profiles/76561198014430171#!/compare/1636156800/1636329600

https://backpack.tf/profiles/76561198131683191#!/compare/1636243200/1636329600

The 74 seller was listed for 75 for a long time (pointed out by K1ng)

https://gladiator.tf/listings/617507a0941d3d5b5b386642

https://gladiator.tf/listings/612229ec81371d854d8fba75

62, 74, 77, 77, 80 90. Ignoring 62 because it is below buyers, ignoring 90 because of the 74 unsold, taking 74-80.