http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=71

Here's a review of some bottom of the barrel power supplies that promise the moon for little or no money. The results are as entertaining as the violation photos section!

I say no money because these pieces of junk are often supplied with a PC case, and said case is $20 while the minimum market price for a case happens to be about $20, with or without the crappy PSU. Oh yeah, 20 dollars does not get you a decent case either! Good cases start around $40.... without a PSU. Bad cases tend to be so flimsy that the motherboard flexes when cards, memory modules or in some cases, cables are attached. They are also too flimsy to keep vibrations damped, they tend to be quite noisy.