It's sorta hard. They judge how you play and then ask for a replay afterwards. I still need my market grad and my scripting grad. Gonna have box teach me how to script so I can get the scripting one. After I get the market one I'll shoot for obtaining every full set Toribash has to offer and then become a market hermit like missue, or toast or 1hand. Then I'll consider becoming GM when I've invested myself pretty well in the market.
I don't think anyone will outdo missuse, he has like, at least one of everything >_>