It's cheap because of rebates and companies offer rebates because they don't always receive them, or so they say(that means more money for them). I have one and it works perfectly, the only problem is that the cables are a little stiff and is a 20-pin, no 24-pin. I've seen antivirus programs for free after rebates but that doesn't mean they suck. Another reason why it's cheap is because it's the old model, at least 2 newer models have been made. The newer models are better because they use bigger fans, flex-force cables, dual 12v rails, 20/24 pin, etc.