I need a middleman to sell Neopets account

I need a middleman for a neopets account! I have an interested buyer but I need to prove that it is a legit account as described. If I give away the account name or info, neopets could freeze the account. I need a middleman to check out the account and assure the buyer that it's legit. Please send me a link to your vouches, I would really prefer a free middleman but we'll see who works out best. Thanks!

I would like to do it like this: I give you the account info, you check it out, assure the buyer, he pays me, then you give him the info.