Its a delicate matter to tell someone what they should charge. Too little and you get mad something was left at the table? Too much and you sit on it... Are you trying to get every penny out of it or just find it a good home for a reasonable price?
Also if you want to sell something lots of good pictures sell, you posted one exterior shot and then got offended no one jumped with a price.
All that said if you listed it at $2500 I think it'd sell rather easily. If you wanted to sit on it and hold out for top dollar you might find someone that really wants it in the $4000-4500 range, but its all based on if you find the right buyer. For ~$6000 people are getting into 98-01' campers, some with extended cabover beds, etc. So post it up as you see fit. I'd recommend putting it on craigslist, the gear for sale section here, and the forsale pinned thread at the top of the forum. That will get you some really good visibility for folks in the market for a FWC. Good luck.
Remember: PICTURES SELL!