"As usual, it is one of a kind, never to be mass produced, and could predict who would get it. Gordon indeed produced great diorama pieces, but if they are never to be produced what good are they for us? I guess just salivate with lust?"
Gordon's dioramas are works of art, you have to see them in person to truly appreciate them.
That said, no, they are not mass produced, they are available to whomever wants one. At OTSN last year, Hans bought the Hartenstein diorama, and Gordon told me he took orders for I believe two more, so if you wanted one, he'll make it for you. The winter diorama sold to a collector who attended the show, I helped Andy load it into the gentlemans vehicle. There were two other dioramas at the show, Louis had ordered one and the other one (the Crete diorama) to my knowledge did not sell at the show, perhaps afterward.
The buyers are not hand picked, they are available to anyone who wants one and Gordon is willing to reproduce one if you want one.
So if you want one, just contact him and he'll make it for you.
Pretty simple process really.