Resuggestion from https://backpack.tf/suggestion/5fe98e63e3562c5aa63c694f

Credits to Surz for originally suggesting it and Blaze for doing the fixes

(ORIGINAL PROOF)

Sales

Sales

Sold for 10 keys

https://backpack.tf/profiles/76561198080250669#!/compare/1603843200/1604361600

https://backpack.tf/profiles/76561198454615761#!/compare/1603843200/1603929600

https://bot.tf/stats/listings/467ZV0X2

Untrace

https://backpack.tf/profiles/76561198204079232#!/compare/1608076800/1608163200

https://backpack.tf/profiles/76561198046353418#!/compare/1608076800/1608163200

Sold for 10 keys

https://backpack.tf/profiles/76561198046353418#!/compare/1608249600/1608422400

https://backpack.tf/profiles/76561198115721685#!/compare/1608249600/1608422400

Sold for 8 keys

https://backpack.tf/profiles/76561198026639685#!/compare/1602633600/1602720000

https://backpack.tf/profiles/76561199001949552#!/compare/1602633600/1602720000

Sold for 12 keys

https://backpack.tf/profiles/76561198342136112#!/compare/1606608000/1606694400

https://gyazo.com/8b60e2e0f8616a03124bbe6e06ce2474

https://bot.tf/stats/listings/MN7OGQ3R

Dr house is paybacks bot.

Marketplace sales

https://marketplace.tf/items/tf2/415;14

Nov 25 $17 / $1.75 = 9.7 keys

Dec 4 $17 / $1.76 = 9.65 keys

Classifieds

https://gyazo.com/a20fc3f19280818f7438bd0fa599348b

3 buyers above 8.

From Blaze:

https://steamcommunity.com/market/pricehistory/?country=US&currency=1&appid=440&market_hash_name=Collector%27s%20Festivized%20Professional%20Killstreak%20Reserve%20Shooter - prof ks sold for 10.9 keys

https://steamcommunity.com/market/pricehistory/?country=US&currency=1&appid=440&market_hash_name=Collector%27s%20Professional%20Killstreak%20Reserve%20Shooter - 2 recent prof ks sales at 7.5~ and 8.8~

12 looks like an outlier here too as well. 8.8 - 10 could work here