I agree. I was very impressed with them as well. The quality of the aftermarket graf pump seemed to be very good, and I got an OEM thermostat and hoses for less than what other companies wanted for aftermarket. They also shipped very quickly. Time will tell how well the GRAF pump holds up, but i'm more than pleased with FCP Groton, even if the pump does fail premature.
Not many websites make their own product, what differentiates them is their customer service and price, and they do it well IMO.