If you want to sell your account, just sell it. I do not understand why you type up all that shit non sense for. Anyway, use official middleman if you don't want to get scammed and due to the fact that nobody likes going first especially when trading with new members like you for example. For LT3, you most likely won't get $30 out of it and that also depends on the stuff(good shits) that's on the account.
and just wth does this mean? "If the account does not work, I will then give you back the money, and contact you to ask if you are still interested (since I will be at no loss as well as you)."
Good luck selling.