PSU for Folding rigs

[Fuganater]

So I am looking for 1 or 2 cheapish PSUs. I need them for my folding rigs. 500W covers what I want but I'd like to have a little bit of buffer. I would like them to be under $50.

What they need to have:
550-650W
24 or 20+4 pin ATX
8pin CPU power
0-4 PCIe connectors (6pin or 6+2 but I'm only using 6)

If the PCIe connections drive the price up then no worries, I have plenty of molex adapters.

I'm located in the US.

Thanks for your help!

 

[DooKey]

You aren't going to get a 550-650w PSU that's worth a crap for under $50.

This is a decent 600w for $60 after rebate: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028

 

[Prav]

$50AR XFX P1550SXXB9 Core Edition Power Supply - 550W same price at NCIX if you prefer them

 

[Fuganater]

Decided to just get a mobo with 4 PCIe slots on it and pick up 1 good PSU. Thanks for the suggestions guys.