I don't know where you live, but I went to a used music store in Chicago and got a Fender P-Bass (Mexican), Crate BX-50 amp, and case for $385. I talked to a few musicians, and they seemed to all have good things to say about Fender basses.
They come in many different price ranges -
Cheapest - Fender's "squire" guitars are very cheap, and if you're just starting out, may be a good bargain.
They have Fender's made in Asia, Mexico, and America, each one being more expensive than the last.
They range from like 200-800.
Like someone else said, make sure you try out your instrument before you buy, as each one will sound unique.