Looks like these are a great buy at current price- guy has them listed under a strange title as well - could go cheap. Local pick up in Oley, Penn.
http://cgi.ebay.com/Beer-making-tanks-CO2-tank-regulator-/320699938529?pt=LH_DefaultDomain_0&hash=item4aab34b6e1
http://cgi.ebay.com/Beer-making-tanks-CO2-tank-regulator-/320699938529?pt=LH_DefaultDomain_0&hash=item4aab34b6e1