To clear things up for anyone who is wondering:
--I will not go first, unless you are highly trusted.
--If you want to, feel free to go first. I will pay you immediately after you trade me the gold.
--If you don't trust me, then we can get a middleman, but we would have to split the cost.
--To avoid middleman fees, sell me the gold in chunks (a bit at a time), although this would waste a lot of time.
Also... Please be ready to show me the gold in game. I'm not going to make a deal with someone who won't even confirm that they have the gold.