https://backpack.tf/profiles/76561198453055175#!/compare/1631404800/1631491200

https://steamcommunity.com/market/pricehistory/?appid=440&market_hash_name=Strange%20Unusual%20Duck%20Billed%20Hatypus

Bought off SCM from an unknown seller for $318.90 = 140 keys

["Sep 13 2021 08: +0",318.897,"1"]

https://backpack.tf/profiles/76561198453055175#!/compare/1632182400/1632268800

https://backpack.tf/profiles/76561198372616713#!/compare/1632096000/1632268800

Starstorm Slumber Duck Billed Hatypus (220 keys) https://backpack.tf/suggestion/614f1a75d5a55356b0227db3

+ 30 keys, sale = 250 keys

https://backpack.tf/profiles/76561198372616713#!/compare/1632787200/1632873600

https://backpack.tf/profiles/76561198065825165#!/compare/1632787200/1632873600

https://snapshots.tf/snapshot/6142c32892f696f6c821b5b8

Untraceable, keys were bought off of MP then immediately traded, then used in the same day to buy the C9 HKC and PE Vive

Buyout of 280 keys, further supporting the marketplace being a high outlier

//

PE Vive was bought for 100 keys https://backpack.tf/profiles/76561199199293334#!/compare/1632787200/1632873600

https://gladiator.tf/listings/6154ba2f50d24f8246d62151

Unknown exact sale on the C9 HKC, but buyout was 150 https://backpack.tf/profiles/76561198061108999#!/compare/1632787200/1632873600

https://gladiator.tf/listings/61532702a98a4415ec6b4216

Excluding this sale as a whole

https://backpack.tf/profiles/76561198115354925#!/compare/1631836800/1632528000

https://backpack.tf/profiles/76561198104146629#!/compare/1632441600/1632528000

Bulk for Spellbound Tippler's Tricorne

https://marketplace.tf/items/tf2/30700;5;u104;strange

https://backpack.tf/item/6737466872

$695 / $1.85 = 375.68 keys

Sales:

140 SCM

250 mixed

280? pure/untraceable but 280 buyout

376

There are clear low and high outliers, going with 250 keys flat

For clarification, the previous suggestion only had 140 and 250 key sales at the time, so it was in one of those "this would need a third sale to determine an outlier" situation, then it happened to have another sale after it closed down

Previous suggestion for reference: https://backpack.tf/suggestion/614f1ab6a15a070fb15347b0