At first I need to say, that I don't know if 1 sale is enough in that case, but I will try.

So, for 4 months we got only 1 sale ( cause all other hats seems to be NFS), so I was the only seller for all that time.

Sold with conga unusualfier (17 keys on scm) for SF chill chullo (233)

https://backpack.tf/profiles/76561198251704884#!/compare/1559520000/1559606400

https://backpack.tf/profiles/76561198141479053#!/compare/1559520000/1559606400 - unusualfier was used

https://backpack.tf/suggestion/5caab1b46780723d0d092e8b - chullo suggestion

x + 17 = 233

x = 216

B/O was 175.

edit: Buyer isn't planning sell this one too

and now he listed hat at 175...Which is actually still support the suggestion, but idk