Resuggestion from https://backpack.tf/suggestion/5e448fcfdbbbbc35ec6874d5

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https://marketplace.tf/items/tf2/30004;5;u61

$84.99 = 52 keys

$67.99 = 38 keys

$68.99 = 39 keys

$56.00 = idk, but I quickbought it

$80.00 = 45 keys, was my sale

$72.22 = 42 keys

https://backpack.tf/item/4055964019

https://backpack.tf/item/3197876456

https://backpack.tf/item/2581877941

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https://backpack.tf/profiles/76561198002974658#!/compare/1581724800/1581811200

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https://backpack.tf/profiles/76561198002974658#!/compare/1580428800/1580515200

https://backpack.tf/profiles/76561198047941585#!/compare/1580428800/1580515200

Orbiting Fire Soldered Sensei + Cauldron Bubbles Tough Guy's Toque

https://bot.tf/stats/listings/Y7D2GZJN 45 key buyout

Caps at buyout, minis on Toque by Shuffle Spy

Toque sales:

https://backpack.tf/profiles/76561198928347702#!/compare/1582848000/1582934400 - 24

https://backpack.tf/profiles/76561198307761034#!/compare/1582934400/1583020800 - DBD Nuke (probably adds but can't tell)

https://imgur.com/a/wygXBA9 - Buyout of 27 Keys for the Nuke sale

https://backpack.tf/profiles/76561198053720151#!/compare/1582934400/1583020800 - ?

https://backpack.tf/profiles/76561198035701234#!/compare/1584057600/1584144000 - Bulk

So that sale will cap at 45 Keys

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https://imgur.com/a/pyWuclp - Sellers at 40 Keys (21 days and 19 days) and 45 Keys (6 days)

https://backpack.tf/item/2581877941

https://backpack.tf/item/3336295842

https://backpack.tf/item/2352723984

Going with 38-42 suggested by moderator in the last suggestion