They sound like pianos in a way. They don't have that initial-attack gut punch you get from bolt-on basses. They sound very smooth, very even, a bit dynamically-compressed except up in the treble region. In a way, they sound almost a bit too polite. They tend to recede back into the mix (assuming sane tone settings -- see my posts in the "preamp too powerful" thread). In that sense, they can be a sound tech's or producer's dream because they need little in the way of clamping down with compression to limit any initial string attack.
A guy who used to run sound for a band I played in told me it was his favorite bass; it needed almost no "struggling with" at his end. Again, see my posts in that other thread, because there's a major caveat there re. tone settings.
Don't worry, you'll find a used one sooner or later. People will be selling them for money for gasoline, food, and rent.