Now I can see why the Craigslist ad is being trolled. The lister is in Reading, PA but the seller on Reverb is Gear Emporium in Cincinnati, over 500 miles away.
The Reverb seller is probably an individual, joined May 2019, two listings and no feedback, but at least he has photos. Legit or not, my guess is that the bass is in his possession, and that the Craigslist lister is attempting a scam.