OK, OK, in our hearts we would LOVE to have rotaries, but just in case you would rather fly more than spend your time in pre-flight and post-flight, check out:
http://www.hciaviation.com/prod-r220-b.shtml approx USD16,800
http://www.rotecradialengines.com approx USD$12,500
Opinions? Any other Radial Engine sources?