Shops are making their profits on a combo of parts and labor. When you come in with your own parts, they lose that potential..that was my point. Many shops don't allow this practice for that reason and also to ensure parts fit/warranty/etc. Your cost for this was v. good - no need to be concerned that you got hosed.I didn't "take" anything from them. They are a repair shop, not a parts dealer. If there is a warranty problem, then I pay them again. I'll take that risk.