I have access through work of cost plus pricing on parts, so I usually buy local as I pay less then my friends shop lol, I have used rockauto twice only, once becuse they showed a full grill and headlight surround kit for a silly cheap price so I ordered it, only got the grill with a small crack, I complained and got the whole deal refunded to me,... Found that fair
Second time was for the diesel comanche, I didn't have access to the parts, rock auto did, price was fair shipping hurt but they did get my parts to me correctly and pretty damn fast seeing how they came from the UK.
To date; very happy customer!!