I recently read an article about "Why Does My Longarmer Charge So Much". The article was written by Andi Rudebusch, a longarm quilter. I felt her article was "spot on"! To my knowledge, I don't have customers complaining about what I charge. However, I probably am guilty many times of not charging enough, especially on custom quilting. I can't tell you how many times I've worked for $10 or less per hour on custom quilts.
It's an interesting read, and worth the time. It definitely brings a new perspective on things from both a customer's point of view and a longarmer's point of view. I hope you take the time to read it.