A pic of the side of the fretboard might help - as is, that one pic looking down the neck makes the fretboard look thicker than Gibson used... but maybe they did that for the fretless, or shadows.
The fact of the matter is that the minitoggle is not factory so the price is insane on that basis. That's more than a minty rare CMT burst.
I think it's very likely legit, fretless RDs from the factory weren't that rare to begin with. Even the earliest prototypes were fretless in part, possibly a nod to fusion bassist Ralphe Armstrong who endorsed the model.
I'd be forgiving about the mini toggle. It probably does what Gibson finally did from the 1979 RDs onwards via replacement of one of the larger toggles by two mini toggles enabling the player to use both the treble boost mode AND the compression/expansion mode simultaneously (the '77 & '78 models didn't have that option yet). So the mod is in line with where the bass' development was going anyway (I wouldn't even rule out that it was a custom request together with the fretless option). Though it escapes me why anyone would want to listen to that
godawfully brittle-sounding combo of bright and expansion mode for more than a few seconds, it's THAT painful and artificial!
