What makes you want to sell your account?

I'm worried about how you can just regain control of the account after sale by disputing with steam and saying the your account has been hacked,  etc. The account can be disabled/VAC banned if Valve finds out it was sold. If someone buys the account, a day later you can submit a ticket to Valve saying you've been hijacked with proof that the account is yours and then the buyer will lose control of it! And since bitcoins are non-reversible, they wouldn't be able to get their coins back.

You are a new member, too, so you can just abandon your account if things turn sour. There's just too much risk involved in this trade.