We own a Duet we bougth it used about 12 years ago. Ours is an early 90's. We kept it as a rainy day bike. At the time we bought it we were a 320 lbs team. The stock wheels were no good. I cold reset the rear spacing and changed it from 135 to 145. Changed rear wheel/cassette to 9 spd. Changed bar end shifters to dura ace and changed front wheel as well. The only expense I had was the rear wheel as the rest came out of my parts bin. Depending on your team weight and ridding style you may be able to get several years of enjoyment out of this bike. But I agree with the above posters. If the bike fitted us and had no mechanical/rust issues I would offer $400 for the bike. The rack/hitch can be left out if you don't need it.