What's wrong with this PSU?

[davie23223]

Ultra / X-Connect / 500-Watt / ATX / Dual 80mm Fan / Titanium-Blue / Modular Power Supply

http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=876412&Sku=ULT31558

This modular has a +12V@34A I was wondering why its so cheap compared to the other PSUs that are +12V@30A and over that are over $100

Is this PSU just on sale or is there a disadvantage?

 

[Ste]

Its made quiet cheaply. I had one, it was so light, it was like a paper clip. I don't reccomend buying it.