I'm pretty sure this phone can also be unlocked.
Review:
LG CU500 (AT&T) Cell Phone reviews - CNET Reviews

Price: $60 (includes shipping) or highest offer
Please offer a reasonable price, but I'll sell immediately for $100
Price Includes Shipping
Payment - Pay-Pal

Problems: Batter cover is broken and the battery falls out. Easily fixed by taping the battery down or replacing cover.
Numerous scratches as well.

Comes with: Charger
USB Cord
Pictures
http://img339.imageshack.us/img339/1358/img00043nt8.jpg
http://img176.imageshack.us/img176/5636/img00053oy3.jpg
http://img236.imageshack.us/img236/6817/img00056go4.jpg
http://img67.imageshack.us/img67/5858/img00060fn6.jpg
http://img67.imageshack.us/img67/2345/img00058ir2.jpg