Oh Billy, you are so right. My SIL and her friend both took their machines at the same time into a "well-known" fabric store that also does repairs.
My SIL has a short in her foot pedal. When she got it back $100.00 later it would not reach the floor. She uses a hat box and bought a new machine. NOT THERE!
Her friend brought hers in for a tune-up. Approximately $130.00 later, she picked it up and when she opened it at home the tension assembly fell out. They had broken it and never told her. They offered to refund $50.00 back to her.
She couldn't get replacement parts so also ended up buying a new machine.