I purchased a groupon to service my garage door. The guy arrived quickly. He replaced all 10 of the rollers and oiled the springs and hinges and cleaned up some wiring. He was very quick and appeared to know what he was doing. The door actually sounds and operates better. I was a little surprised how much it was. He charged $ 20.00 for each roller plus an additional service fee. Much to my surprise they are online for $ 2.00 each. That is ten times the price. That is just to much of a price separation for the hardware provided. I guess that i will admit that i got swindled. If i plan to do any more work on a garage door I will do it myself and save myself a few hundred dollars. I was just being lazy and found a groupon.