That's quite surprising. There are a few of my main friends that build PC's often and every one of them have also ran into issues with dodgy components when purchasing from Ebuyer. We did find that they had amazing customer service, but judging from the experience I and close ones have had with them component quality wise, they need it as it's used, often.
As with all companies, everyone will have difference experiences with them, it just seems that myself and the people I know have had bad, where as you lucky guys have had good.
Rove.