I think the price of Queens varies all the way from very little to very much, Blumbly, due to the smallness of the market, the number of bowls clubs that have retired their Queens, the stupendous price of the machines when new, and the poor communication between willing sellers and willing buyers. An ideal opportunity for entrepreneurs, I would think. However I think most Queens are three phase, though they seem to have had a single phase option. Not everyone has three phase power at home.