I have an Evga 500W 80 Plus rated PSU barely used for $25 shipped to US 48 via Paypal or $20 if you are local. I'm in the Metro Atlanta area for those inquiring about a local purchase. Unfortunately, I have misplaced the box ( ) but it'll be safely shipped in a flat rate box via USPS rest assured.
Here is a gallery of the PSU in its 'box-less' glory:
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