Yea they are cheap, I just bought one. Haven't hooked it up yet, but I bought for $35 (budget build). It was their 1500 watt //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif class d (rated @ 750 I believe). Removed the heatsink and like 1/2 of it was empty //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif, but I bought based on fuse size (50 amps). Only hopping to get 500 clean watts out of it.