First resuggestion in 2 years yikes

Credits to Paradise for helping me out :)

Sale 1:

Traded with 2 keys for a Dead Presidents Yellow Belt(still in-date, 17.5) through scrap.tf auction

https://imgur.com/a/H5Yz5x5

https://imgur.com/a/yMKRqkH

Rounding Yellow Belt to 18, we get 18 - 2 = 16

Total: 16 keys

Sale 2:

Sold for 13 keys

https://backpack.tf/profiles/76561198447536098#!/compare/1548547200/1548720000

Sale 3:

Also sold for 13 keys

https://backpack.tf/profiles/76561198069414668#!/compare/1547769600/1547856000

Sale 4:

Sold for $33.33 on marketplace.tf on Jan 4

https://marketplace.tf/items/30316;5;u60

keys were around $1.76 at the time

https://marketplace.tf/items/5021;6/Mann%20Co.%20Supply%20Crate%20Key

33.33/1.76 = approx. 19

Total: 19 keys

Sale 5:

Sold for $24.99 on marketplace.tf on Jan 31

https://marketplace.tf/items/30316;5;u60

keys were around $1.8 at the time

https://marketplace.tf/items/5021;6/Mann%20Co.%20Supply%20Crate%20Key

25/1.8 = approx. 14

Total: 14 keys

Sales: 13, 13, 14, 16, 19

19 seems like an outlier sale, so excluding.

Going with 13-16 keys

If there are any other usable sales that I missed or there is something I need to fix, please let me know in the comments. Thanks!