Resuggesting

Classified:

https://gyazo.com/f42f51697bfc7586b2cfd3dcb55b8c78

Sales:

http://backpack.tf/profiles/76561198033378852#!/compare/1471132800/1471305600 - 32 keys

http://backpack.tf/profiles/76561198239218830#!/compare/1471046400/1471132800 - 28 keys

(Credits to M7 ツ and Teeny Tiny Cat)

Sale at 38 keys:

http://i.imgur.com/ntAwAhE.png

(credits to BestBot) Sadly, with actual scm price + 30 keys seler needs a 4 days to sale this is outlier

Why 30 is not low end? Seller 30 keys needs 4 days to sale. 30 keys seller on SCM is unsold for 3-4 days (and there is 3 sellers at this price) + i'm bit afraid using buyers as low end - strange corona suggestions

So going with 28-32