https://mannco.store/item/440-smoking-unusual-hard-counter

https://backpack.tf/item/715627199 (Not too sure if this is the right item history)

1) Sold for 15 USD = ~ 8.5 keys

https://manic.tf/keyprice/?site=mannco.store&at=2022-09-21&price=3465 - 15/1.75 = 8.57 keys = 8.5 keys

2) Sold for 15 USD again = ~8.5 keys

https://manic.tf/keyprice/?site=mannco.store&at=2022-10-03&price=3465 15/1.81=8.29 keys = ~ 8.5 keys

3) Sold for 20 USD = ~10.5 keys

https://manic.tf/keyprice/?at=2022-12-11&site=mannco.store - 20/1.88 = 10.64 keys = ~10.5 keys

4) Sold for 19.99 USD = ~ 10 keys

https://marketplace.tf/items/tf2/254;5;u35

https://manic.tf/keyprice/?at=2022-10-06&site=marketplace.tf 19.99/1.98 = 10.10 keys = ~ 10 keys

Sales:

8.5 keys

8.5 keys

10.5 keys

10 keys

Given there's a seller at 9 keys, and buyers at 8 keys, I'll be excluding sales 3 and 4 for being too high and I'll be going 8.5 keys flat.

Feedback welcome. Thanks!