Well, I did meet a cool young man at Carlisle last year who proves Gesswein does sell them. He had the white NYB that sat on the show field all day while he and his dad explored. I hope he joins the C Body crowd this year... I think you guys will like him.
But yes, I do believe the Gesswein inventory is more of a personal collection, disguised as inventory, that allows for a big write off for the family owned dealership. Plus the benefit of no registrations to pay and the cars would be covered under the dealer's existing insurance.
Their large (not really that large) advertising budget puts them on the radar of many of us, who otherwise couldn't care less about a dealership so remotely located for most of us. And they singlehandedly seem to have skewed the Formal value guides hard enough, that us cheap old guys still struggle to comprehend the pricing.
I believe that without their efforts, Formals would still be as simple as "$2500"...