I had my 1981 L2000 refretted by Jim Mouradian (in Winchester, Mass.) and he charged me about $150. Granted, he's about as fair as you can find in a master luthier, AND it was in 2000. But still...

Also, he used vintage (skinny) frets; he recommended them, telling me that they would significantly warm up the tone, and he was absolutely right. That might not be what you're looking for, of course.