Quoted from Mr68:RZ & AMH plus 1K equals about 15K and price indicators are headed down on AMH. BBB are selling in the 20K range and holding steady, possible climbing.
BBB has been around 15-18K for several years, and isn't climbing anymore. Last few sales I know of were 16, 15 and 17K. Haven't seen or heard of a 20K+ sale in a long time. It's rare and has cool history, but so does AMH, RZ, CCC and other boutique games. Gameplay on BBB is limited... it's fun, but not as good as many Sterns and WPCs. BBB has lots more competition for "rare and cool" factor these days.