Looking at this item: https://backpack.tf/item/1422634128

seller: https://backpack.tf/profiles/76561198169984351#!/compare/1591833600/1591920000

buyer: https://backpack.tf/profiles/76561198056810044#!/compare/1591401600/1591920000

Sold for 9 keys.

--------------------------------------------------------------------------------

Mp sales: https://marketplace.tf/items/tf2/259;5;u33

Apr 11, 40.00$/1.71$ = 23 keys

Jun 2, 20.10$/1.94$ = 10 keys

Jun 15, 21.99$/1.99$ = 11 keys

--------------------------------------------------------------------------------

Current bp listings: https://prnt.sc/tff59h

unsold at 10 keys

--------------------------------------------------------------------------------

Going with 9-10 keys.