It varies greatly. Different vets charge different amounts. Usually there is a general "office visit" fee, then different charges for whatever procedures are done, medications given, etc.
It really depends on the vet. I bring mine to one of two vets in my area. One vet charges $60 just for the office visit, not including any type of care or medicine. Another vet charges $40 for just the office visit, not including any type of care or medicine. You can try to look here on the site http://www.chins-n-hedgies.com/forums/forumdisplay.php?f=104 to see if anybody has recommended any good vets that are in your area.