That is the last series of these, with an ebony board (predecessors only knew maple) and often enough a more stable three piece neck too. I guess prices on these have gone up too, five years ago or so you could get one in better shape for, say, 600 bucks if you were lucky. But 900 today is ok.
Airey tone? Liberal drug laws in The Netherlands take their toll.
I find the G-3 among the most assertive, attention-clamouring Gibson basses. Though passive, it has some of the aggression of a 70ies Stingray. Very snappy, but with lots of ooomph too. Not really a warm growler, more of a Ric clank to it. If you want your bass to be heard and have prog or funk leanings, this is a bass for you. Slapped or played with a pick, this thing really gets itself heard. Much more aggressive than a Ripper and hi-fi'sher (not sterile though) than the middish-sounding (sliding pup) Grabbers.
Ask the seller whether the bridge height screws are still fit. They tend to be gouged out on older models, but somewhere along the line Gibson invested in better screw material.