Really cheap aluminum bare head? Any good?

There's a lot of cheap aluminum cylinder heads on the market now, not just for B/RB motors. A couple vendors sell these under different house brands. Example - 440 source has a complete head for just $499: Stealth Aluminum Cylinder Head - COMPLETE - SINGLE HEAD-440 Source

From what I have been told, the cheaper heads are cast in China or India, and the quality control can be variable. But like you, I am thinking about taking the plunge and I am interested in what people have to say...