Thanks to †weezer & awsommv for helping with the pricing and history logs, along with shuffle for the freebie

Gladiator.tf Sale

https://gladiator.tf/sales?item=Spectral%20Escort%20Taunt:%20Zoomin%27%20Broom&at=2022-02-22T21:45:53.004Z

Sale that rounds to 16 and sale that rounds to 17

Backpack.tf Trades

Sale 1

https://backpack.tf/item/9294035879

https://backpack.tf/profiles/76561198104958975#!/compare/1636848000/1636934400

https://backpack.tf/profiles/76561198066819773#!/compare/1634515200/1636934400

Sold for 11 Keys + Skill Gotten Gains Zoomin' Broom, which immediately sold for 6 Keys + 16 Refined to Erik's bot (Erik has it on Marketplace now)

Sale 2

https://backpack.tf/item/4262339997

https://backpack.tf/profiles/76561198156255538#!/compare/1601510400/1601596800

https://backpack.tf/profiles/76561198090339904#!/compare/1599782400/1602460800

Sold for ~43 keys worth of items

Sale 3

https://backpack.tf/item/4291373499

https://backpack.tf/profiles/76561199102430997#!/compare/1638576000/1638662400

https://backpack.tf/profiles/76561198841214147#!/compare/1638144000/1638662400

Sold for 2 keys

Sale 4

https://backpack.tf/item/4291373499

https://backpack.tf/profiles/76561198337746852#!/compare/1634688000/1638057600

https://backpack.tf/profiles/76561199102430997#!/compare/1635811200/1635897600

Sold for 3 keys

Sale 5

https://backpack.tf/item/6981074810

https://backpack.tf/profiles/76561199202090646#!/compare/1637366400/1637452800

https://backpack.tf/profiles/76561198002757046#!/compare/1543190400/1642377600 -Untraceable

Sold for 47.5 keys worth of items

Marketplace.tf Sales

https://marketplace.tf/items/tf2/30672;5;u3037

Sales:

$41.49 (~17 keys)

$41.49 (~17 keys)

$41.49 (~17 keys)

$41.49 (~17 keys)

$41.49 (~17 keys)

$59.99 (~24 keys)

Untraceable Trades

https://backpack.tf/item/9294035879

https://backpack.tf/item/9271111333

https://backpack.tf/item/6981074810

https://backpack.tf/item/5385239610

https://backpack.tf/item/4463312628

(Bought)

https://backpack.tf/profiles/76561198248576070#!/compare/1637539200/1638230400

https://backpack.tf/profiles/76561198067651658#!/compare/1637884800/1638230400

https://backpack.tf/profiles/76561198307764211#!/compare/1634688000/1642377600

https://backpack.tf/profiles/76561198123789684#!/compare/1634601600/1642377600

(Bought in Bulk)+

https://backpack.tf/profiles/76561198248576070#!/compare/1617408000/1620432000

https://backpack.tf/profiles/76561198091502579#!/compare/1619136000/1619308800

(Traded for 15 ref?)

https://backpack.tf/profiles/76561198091502579#!/compare/1619049600/1619222400

https://backpack.tf/profiles/76561198850121720#!/compare/1619049600/1619136000

Excluding the sale at 24 as its too old

Taking 17