History 1: https://backpack.tf/item/7609981049

35 keys + Unique Pool Party:

https://backpack.tf/profiles/76561198203329164#!/compare/1610409600/1610582400

https://backpack.tf/profiles/76561198095293350#!/compare/1610496000/1610582400

Pool Party was worth ~ 4 keys 40.33 - 5 keys 6.22 ref at the time of the suggestion https://gladiator.tf/listings/5ffe1a3ac798abf0ecc01f6a

Keys were ~52.66-52.88 ref https://gladiator.tf/listings/5ffede61c3949a8747cd1736

That gives us 4.76-5.12 keys, media value of 4.94 keys, rounding to 5

35 + 5 = 40 keys

Buyout was 35 keys so capping at 35 https://gladiator.tf/listings/5ffeb0cc08cfbb43ed3afcf4

History 2: https://backpack.tf/item/3388600414

13 keys match but it was dumped to Quicksell.store, can't see snapshots but more was probably involved given the current buyers up to 27:

https://backpack.tf/profiles/76561198026198026#!/compare/1605398400/1605484800

https://backpack.tf/profiles/76561199084784906#!/compare/1605398400/1605484800

31 keys:

https://backpack.tf/profiles/76561199084784906#!/compare/1606089600/1606176000

https://backpack.tf/profiles/76561198081731009#!/compare/1605830400/1606176000

Untraceable Marketplace.tf sale: https://marketplace.tf/items/tf2/30570;5;u3033

November 28: $58/1.76=32.95 ~33 keys

Sales at (maybe 13), 31, 33 and 35

13 is obviously a low outlier given buyers up to ~27, taking 31-35

made a mistake that I can't edit, where I wrote "at the time of the suggestion" I actually meant to write "at the time of the sale", my bad