My problem is much the same as the other reviewers. Quickstop's quoted one price and then overbilled by about about $50. No help from their customer service guy. Rude, hangs up on you.
I agreed to pay $183. They billed $239. I returned the package. They take a 15% "restocking" fee plus the original shipping charge. Shipping was supposed to be free. Result- my refund will be only $184.72. If I ever get it!.