$ 2500 for a bone graft and a single tooth extraction?

Fees can vary quite a bit.  Hard to know exactly what kind of graft is needed, how difficult the extraction is and if anesthesia is included.  What I would suggest is to get a second opinion.

It certainly doesn't hurt to get multiple opinions. The fee varies from location to location, depending on many factors. Consult with an Oral and Maxillofacial surgeon. If your general dentist referred you to the Periodontist, give him a call and see what he thinks. As a general dentist, who does very little surgery, I want to know what my patients that I refer are being charged and why.  The dentist obviously sets his fees according to what he thinks the procedure will cost him, difficulty, etc. 

In Costa Rica that runs around $500, send our dental form and that way we can give a exact quote.