I have a 1977 Grabber w/ natural finish and alder. It is a comfortable bass and the neck has a Precision feel to it. At 8.2-lbs, it is surprisingly light for the body footprint. If this was the maple body version, I imagine it would be noticeably heavier. The body width is quite slim, which I also like.
That eBay Grabber looks legit and quite nice. I predict it is going to sell on the high end of the used Grabber range. The 402xxx SN of the eBay Grabber fits with 74-75. Per Flyguitar.com, the natural finish first came out in 75, so that bass is likely a 75. Only alder was offered in 75, and the wood grain looks alder-like to me as well. That means this is likely one of the lighter Grabbers.
While the blondesare more common, I personally much prefer the look of the blonde Rippers and Grabbers over ebony.
The eBay Grabber comes with the HSC, and it is difficult to find a case that fits these Gibsons, so that adds to the value as well. It is true Grabbers and Rippers were dirt cheap not so long ago, but I think those days are gone.
A good site for Grabber info:
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