I recently had a twin quilt basted by my quilt shop. They charged .015 per sq inch. I did the math wrong (normally I'm good at math). I figured it was going to cost around $35. Imagine my surprise when it cost $95.
But I really like it. I quilted stabilizing lines around the 10 inch squares and did stitch n the ditch around the borders. I then removed the basting (very easy). I had no problems with the fabric on the back getting puckers. I'm now doing the quilting in each square.
My my cousin owns a long arm and has offered to let me use it. I am thinking about basting my own. But it was really great having it done.