I would contact the two clinics you listed in North Carolina and explain to them you are a student and on a budget. After that has been established, tell them you have a flexible schedule and can fill a canceled appointment when it becomes available especially if you live close they will really appreciate that! Also tell them they can use your pics pre-op/post-op on the internet and in their catalog of pictures at the clinic.
If you offer those things hopefully you'll be able to get them down to $3(maybe less) per graft, or $7500 for the surgery. And if you don't have a flexible schedule, or are apprehensive about using pics on the net....Make it happen anyways as if this is important to you then don't let those be obstacles, especially if the alternative is Nuhart.