If you can part with $15, Tandem Club of America (
www.tandemclub.org ) is a good information clearinghouse. Besides the normal tandem stories, TCA's Double Talk magazine has club listings as well as events hosted by various clubs. There are usually a few bikes for sale, too. As to purchasing a bike, it's helpful if you and your future wife/stoker do some test rides. Some folks make the mistake of buying a tandem and end up selling it quickly. Some new stokers find that they can't deal with a loss of control: brakes, shifting, & direction are all in the captain's hands. Being a stoker is more than just a leap of faith. It's trust as well. As for pricing in general, figure on 2.5-3 times the price of a single bike with an equivalent frame material and gruppo. Hope this helps.