Well, I sent in my name to go on the list, fingers crossed, just a waiting game now. Marc from BigBangBarStuff was helpful and did say that the BBB can be worth a mint. This is what he wrote in a recent email -

"The BBB project is long done and any machines available are in collector's hands.  There are some NIB BBBs out there, but I hear they are going for over $20,000 USD.  I think used ones go for $8-12k.  If you are interested in a new one, I know of a guy that has a NIB.  I think he rejected an offer over $20k already, so I think it would take $25-30K to get him to let it go.  I don't think he wants to sell it, but has not set it up yet..."

So with that said I think the Kingpin should at least holds it value and from reports sounds like a awesome game.