prices vary vastly by location- expertise- size of project- everyone charges differently-
some people charge anywhere from 1 1/2 cents to 2 1/2 cents a square inch some charge by the foot- some charge by the project-
some add a charge for the thread- keeping count of bobbins used with a basic amount per bobbin- some include the thread-
call around your area and see what quilters are charging- then figure out what seems fair to you.