I don't think they're open now. You try and contact them directly.
Is it possible for admins on the site to do middleman actions? I want to buy someone's steam account they are selling for $15 USD and i will refuse to pay first as it is not a store or anything like that, just a user trying to sell an account, and he only has 20 rep. So unless he is willing to give me the account before i make payment, is there any way an admin can be a middleman, in which i send payment to him, after the guy gives me the account, and once i say everything is all good, the admin then sends the money to the seller?
I don't think they're open now. You try and contact them directly.