Not to threadcrap, but a 500gb SATA hard drive can be found for much less online. I would suggest you lower that a little bit.
found it for 130, but when shipping is included it would be around 140... sure it could be found cheaper if you look hard... ALSO saw this same offer with the date and all at CHICAGO CRAIGLIST
These are available at Fry's.com for $90. You're going to have much better luck on eBay than anywhere else.