the $60 something you quote for FJ is not entirely accurate, I have had a few dets to various spots in US and (on one of them) got $7 per day - YES!, someone said if we eat soup and salad at the base diner, that is all you need, (so that is all we got! per day for two weeks), other locations had similat 'rates' because some advanced party discovered that is is posible to survive on nothing. I empathise with your situation, and although illegal, no-one seems to fight this cr@p. Remember the same rule makers say that we can eat in London for £23 per day....!
...BUT the uni district is a nice place to go when in Tuscon.