We got there on our own and paid $15/person, plus $5/person for the lunch on-premises after our hike. It can be $60-70/person if you get there using a guide and/or driver. The route to Rainmaker was very pretty as you head inland. The lunch decision (which in the off season at least you have to make before you begin your hike so the food is ready when you return) turned out to be a good one. We really enjoyed the food and the open air pavilion.
The two trails were very pretty. There was a third trail that was damaged from what we could tell in storms a couple of years ago. The swimming hole was very refreshing. Rainmaker was a very pleasant find.