If there are no problems, it will be a nice transa...

If there are no problems, it will be a nice transaction. If you have a little issue, it will be magnified due to the lack of a customer oriented culture (and probably incompetence). They don't own mistakes, Rockauto doesn't stand by its customers when the carrier fails to deliver. They play the waiting game when it's obvious that an expensive express delivery is lost (it's Rockauto who needs to claim compensation to Fedex).
They charge Canadian taxes on transport service that is hired and provided in the USA.
They don't have phone customer support, only email, and it's rude.
Prices have gone up markedly, specially if you factor the expensive shipping.
They are using a paid customer review site (customerlobby) so their bad reviews are filtered or answered if there is any chance to blame the client (my well documented review was never published).
Do yourself a favor and check BBB or trustpilot customer reviews, and thank me later.