Don't let the dings and scratches worry you. If it is structurally sound, it is all good. My bass has chunks out of it that were patched up by the best in the business...it looks ugly, but is stronger than when new. Just about any bass of age will be beat up...with age comes scars.
If you are new to the bass, bring your teacher along with you (or someone else who knows what they are doing).
Is this Mr. Greene, Chris Greene from the FDP? If so, what is a guitar player doing selling basses?
