Hi kworm, most people tend to use their fpp in the 235fpp hyper turbo 6 man satalites to the 11$ tournies (storm for example) and then unregister to receive the T$ for them. You also have the option to continue to build and trade in the store for $, but if you can win 1 in 3 of the satalites I mentioned you are getting better value.
You also have the option of using them in the 10fpp 500$ or 20fpp 1k freerolls
that run through the days, and also there are 50fpp freerolls that run on saturday's I believe it is that you will find in the VIP tab, and might be a 1k or 2k tourny I don't remember exactly as only saw and tried them once.
Hope this helps.