+1Play a Ric before you buy one. They are very polarizing instruments, you either love them, or you really hate them. I have never heard anyone describe playing a Ric as being OK. It's either a little slice of heaven, or a trip straight to hell.
As far as worth goes, how do you determine worth? I love my Ric, and will never sell it, but I really don't play it out much anymore, so I doubt that I'd buy another one.
I've had a few 4003's in the past and now a 4004L with a 620 guitar. Not all are comfortable and the models while varying slightly, sound very different. The 4004L and the 4004cii (if you can find someone who is willing to part with it) are simpler basses, but much better built. The switches are solid clicks. Simple volume and tone and a much darker tone it is. Don't pass up a 4004 if you have a chance at picking one up. 4003's are out there and they are great too, but they are not for everyone. Worth it? It's either your sound or an addition to the arsenal of different sounds you work with.