I don't know that I'd say it's a great deal, but it's not bad. A black Classic '50s P (used) from Musician's Friend for $599.00. Plus, there's a code for an additional 10% off, which would take it to around $540.00. They list the condition as "Very Good".
If I didn't already have one, I'd snag it.
http://bass-guitars.musiciansfriend....ku=511318#used
EDIT: For some reason, the link isn't showing the used one. Only the new one. But I got an email from MF about used gear. That's where I spotted the used one.
