Hey, I jsut got one of these off Ebay since i'm desparate for cheap controllers. . .and it kicks ass. It beats the pants off my suitemate's logitech in range and battery life, it's heavy and solid, comes with a sweet stand, and has macro and turbo buttons (which I'll never use but it's cool to include sh*t) which act as connect LED's. I got it on ebay for 18 shipped, and that was with like 10 shipping. I recommend anyone looking for wireless controllers to check them out, since there were other cheap ones. No idea if they interfere with one another, but the one I have is sweet. 
Summary: Inexpensive, good quality, good find.
Summary: Inexpensive, good quality, good find.