QUOTE(jackhhhh @ Apr 3 2015, 05:12)

I just hammer away at the Grindfest
That's not gonna get you all that much profit until you can finish a few hundred rounds and then sell artifacts and crystals - daily arenas are better.
Though, at your level, you should be more concerned about experience than credits, and you only have access to a few arenas, so lots of Grindfest could be the best option to get to level 100-150 in a day or two (after which you can then start earning 50k-200k from arenas).