Depends on the bass really. If it's relatively new then you do expect it in good nick.. if it's a 20+ year old piece of gear then you can't expect it to have survived too well if it's had multiple owners.
My Stingray is virtually mint and is 12 years old, the Jazz is 8 years old and not in as good a condition. The Hohner is 24 or so, and really looks it too.. bucklerash, grubby neck, rusty screws etc..