A friend of mine gets hers done here in town, and the lady she goes to charges by the detailing required. My friend usually spends about $45 for a twin, but once spent $110 because she didn't specify what she wanted done, she just said make it pretty, and a beautifully detailed quilting was done. She was pleased with the job, but not planning on spending that much!
A church around here does "missionary" quilting where they (a bunch of older women who love to get together and quilt) handstitch your quilt for a donation that goes to overseas charity work.