Generally buying parts through Rock Auto is great. Their service is good, their prices are good and if they have wholesaler closeout on a part, the price is great. I will continue to use them in the future, probably often. A negative is that in some cases - not always, but too frequent it seems to me - shipping is charged twice when buying two of the same part. The parts can be lightweight, like brake hoses (< 2 lbs), so weight does not trigger it. I have ordered two heavy parts, like calipers (12 lbs) and the shipping is half of what it is for two of the same part number on brake hoses. I have not been satisfied with the explanations I have received for this. Someone in the chain is charging shipping on the second part when there isn't any.