I've had fairly good service with them in the past except for one occasion. When I bought an alternator from them, they didn't include a new pulley for it. When I emailed Bill about it, he said I should be able to use the stock one...well 90k miles of driving had basically welded the pulley to the alt and it took a few emails for me to convince him it wasn't coming off and for him to send me a new one. In the mean time however, my stock alt was basically destroyed from trying to remove the old pulley so my car was unusable for a few days...He did eventually send me a new one but the whole ordeal kinda pissed me off...I still buy from them though.