St. Louis Park
What happens when only one cube remains?
Winner pays their full bid for one share. Second pays nothing and gets nothing.
I've had a couple requests for a turn marker, so I think I'm going to put together a card that could be used for this and post it in the files section. Another alternative is to lay out four of the city cards and flip them face down as each round is completed. I've also been meaning to put together cards to mark which players have passed and I'll put those in the files section too.
Your first game might take a little longer than a lunch break unless you can really push the players to evaluate and bid quickly.