On the bright side you wont have to be so picky with your money when you reach around Lv60 and get Mr. P. Money Bags Klotho's Extreme Quest and higher end Time Attack missions. Which are like a guaranteed 1mill+ per week, and if you have more Extreme Tickets than you know what to do with like me each run of 1~5 Glacial Machinery or 46~51 Forsaken Aquatics can easily net you anywhere from 70~240k per go depending on boosts.