I've only had one done my a professional quilter but her rate were from a penny to a nickle per inch, depending how detailed of a design you choose. I chose my design before I asked the price and it cost me 283.00 for a queen size. that was 3 or 3 1/2 cents I forgot. I was very pleased with her work and it was a top that my mother made so it was worth it but next time I'll get an estimate first.
kathy