I have sent requests for estimates to each of the clinics I listed. I have only heard back from American BioDental at this time. The estimate for the treatment plan that my dentist here came up with was $12,000 (which is half my annual income!). American BioDental's estimate was $3,800 for the same treatment plan.
I'm hoping to get some feedback on the quality of the work from the places I'm considering-- it appears that the prices will be much more reasonable.