Of course comparing to a postdoc is unfair because you're putting in ~80 hours a week, which is certainly below minimum wage, and the postdoc market is totally insane.
Nonetheless, I am definitely making more than minimum wage - for the first time in my life I have savings and investments. Not to mention the fact that I have launched a nonprofit, sinking quite a bit of my own out-of-pocket to get that running. Granted, the take home was much higher at the beginning of the year (avg 1400/wk) than it is now.