The currency is "monies," which consists of gold and all world-currencies because I'm lazy. Also, a Merchant needs to be at least level 50. Sorry for the bad descriptions, but basically the 4 furthest toward the top and the 4 furthest toward the bottom are the starters, and when you get to level 50 you advance once on the web, then when you get to level 100 you can advance anywhere on your side of the web.

God, it's easy in my head but I have a hard time putting it into words.