WTB 450-500w PSU

[StaticlyCharged]

Looking for a decent price on a reliable PSU. It's for a Dell e520n PC. Doing upgrades etc. I can't seem to find a decent deal for a 450-500w PSU (Antecs are all $60+) Looking for something around the $40-50(shipped) range. Again, not looking for some $20 poorly made island PSU, looking for a trusted name for a good deal, someone has to have extra PSU's laying around