if you're wanting to buy keys, and you're not willing to go first you are not going to get them.
its either go first or use a sythe or steamrep middleman.
AK-47 Fire Serpant (Field Tested)
Price of it: $140 USD and going up!
If you interested i have added you on skype, and you're able to sell this skin for Paypal money via OPSkins which is a safe way to make Ingame weapons to Paypal money.