No proof. Read the suggestion guidelines before you post one...

please read the rules again before suggesting: http://backpack.tf/vote?showrules=1

Hey, listen, I realize that you didn't follow guidelines and whatnot, but don't feel discouraged about suggesting prices. Just try and get some proof for your claim, such as trades on outpost or bazaar or what have you that successfully sold/bought the item for what you're setting it at, and trades at different prices that haven't been completed after a long time. The important thing is to learn, and not give up.

Please take a closer look at the site rules before making your next suggestion; http://backpack.tf/vote?showrules=1