Hello---- My friend is getting married this weekend in San Francisco and his wife asked me to find them a tandem as a present AND to show up to the Saturday afternoon picnic on it. I told her I would try but after weeks of looking on Craigslist, no luck. So I am trying here. The overall budget is $750 or so, the captain rides a 51cm road bike, stoker a 55cm. A mountain tandem (older burley?), seems to me, would be a good first tandem for them. If you know of a tandem for sale that fits the bill, please email me at email@example.com. Thank you!