As a luthier/repairman, I usually charge about $50 for a routine bridge removal and reglue. Martins actually tend to be fairly easy reglues since they don't use any space-age glues in assembly. It's usually best to remove the bridge entirely because you can't get a good glue joint unless you remove the old glue to get wood to wood contact. You can find a lot of good information from www.frets.com.

Sandy