Sale 1:

https://backpack.tf/profiles/76561197960788095#!/compare/1611532800/1611705600

https://backpack.tf/profiles/76561198095236132#!/compare/1611532800/1611619200

Bulk.

Sale 2:

https://backpack.tf/profiles/76561198010763813#!/compare/1612915200/1613001600

https://backpack.tf/profiles/76561199103818277#!/compare/1612828800/1612915200

= 37 Keys.

Sale 3:

https://backpack.tf/profiles/76561199103818277#!/compare/1614124800/1614211200

https://backpack.tf/profiles/76561198041108750#!/compare/1614124800/1614211200

= 55 Keys.

Sale 4:

https://backpack.tf/item/9556112843

https://backpack.tf/profiles/76561198040601138#!/compare/1609804800/1610236800

https://backpack.tf/profiles/76561198079424670#!/compare/1609977600/1610064000

https://steamcommunity.com/market/listings/440/Unusual%20Field%20Practice - Jan 8

$88.92 / $2.46 = 36.14 keys.

= 36 Keys.

aj on a break, back in June:

3 new sales:

https://backpack.tf/profiles/76561198339431191#!/compare/1615852800/1615939200

added 10 keys for PFetti Towering Pillar of Beanies

Probably going to use over there

https://backpack.tf/profiles/76561198339431191#!/compare/1615939200/1616025600

36 keys to bot

https://backpack.tf/profiles/76561199111658162#!/compare/1615939200/1616025600

40 keys off bot

https://imgur.com/a/hZMAIRN

Thanks Panda Nuisance for the screen shot

40 keys

sales are now

37, 55, 36, 36, 40

Buyers have dropped, I think 55 is high now given 4 sales around 40 ish

36 - 40 keys here likely works

Check https://backpack.tf/suggestion/604afa16f340ee1eac352c8d for more detailed info