I have been writing for textbroker for years as well, and I am very happy with them. I believe that you should double/triple check your work anyway. Yes, they are picky, but in my opinion, you should be picky about your own work. I have been downgraded before and learned my lesson very fast. Always, always check!
Another way to make good money on this site is to start joining teams. Team orders often pay more, regardless of star status, and you also have more opportunities for work than if you did not join teams.
Further, once you get a good reputation, you should start getting direct orders. You can set your own direct order price. I used to have mine set at 2/cents a word, which I thought was pretty good for this kind of site. I recently upped it to 3/cents a word and didn't think I would get any orders, but I have! It just goes to show that there are people out there who are willing to pay well for good content.