WWTBAM stands for Who Wants to be a Millionaire. I competed in the DCA show back in the day (two different times) and I managed to get all the way to 32,000 points. Besides the baseball caps and the golf shirts I got collectible pins going from 100 points to 32,000 points.
Are these pins valuable? It seems so to me because no one would be able to buy them. The only two legal ways to get these pins is to compete for them (which you can't do anymore) or trade for them.