I always give estimates free of charge after a full consultation and inspection of your instrument.  Many musicians, and the parents of aspiring ones, appreciate a thorough consultation in which they can be shown the advantages of one type of repair over another.  These appointments provide an opportunity to receive friendly, professional guidance in the maintenance of your horn, as well as a forum for the story of your horn to be told. 
In considering quotes for repairs I believe in the Fast-Cheap-Good pyramid:
It can be fast and good, but it won't be cheap.
It can be cheap and good, but it won't be fast.  
It can be cheap and fast, but it won't be good.
I believe in providing musicians with horns that are fun to play because they have been correctly adjusted by a professional that cares.

If you are thinking, "Yes, this is all very nice, but how much does it cost?" You can see ballpark figures here on the Services page.