Well, lets see;
1. maybe only 400 made it to the states at a time when Ducati didn't have much of name. This was their 'entry' model. so, not many people even know it exists. Not exactly collectable, at least not yet.
2. $5k is bit high. If you get lucky, you will sell it for $3k. You can pick up a 900ss for $3k. (bigger motor, better forks, better brakes, 17" wheels, lots of spare parts, etc.) There's been another one on the local SF Craigslist for $3.5k for about 2 months, and I know of third for sale for 4 months now. If I had $3k, and the space, I would by the 907 in Denver. (see the other ads in this space)
3. Not many collector dollars out there right now.
4. Its cold, raining, and Christmas. Bad month to sell a bike, and January and February may not be much better. (good month to buy a bike though)
The economy, weather, and the jones to go riding will all be better in the Spring, if you can wait.
Nice bike, but a tough sell.
But then again, you only need one buyer.
Hmm, 1990 851, or a 1990 Sport?
http://sfbay.craigslist.org/nby/mcy/1507479400.htmltough market. this ones been for sale for 2 months now.
Cheers,