Hi possum, welcome to the forums
, you ask a Q that has many answers, if it wasn't getting much use, it would obviously need a good going over by a tech, we have some here on the site, this will not be cheap, the box and manual are just a bonus. This is a very complicated machine that needs to be in proper spec to get top dollar.
If the cosmetics are first rate and it just needs a re-furb, you'd be best off putting it up on ebay with some killer pics to show it's major selling point, no marks, nicks etc...get the bidders going beyond what it's really worth in real dollars. I say this not as a hater, I just think the Dragon is waaaay overrated as the best there is, and that fools pay $1,500 for a deck that needs another couple hundred to bring it back to factory or better spec. It's a show piece to brag about....
It's a Freakin' Dragon !!!
I'm probably pissing ya and other Nak lovers off, but several members and friends here have very nice decks that can sound amazing with the right tape and in the right system...Braxus with his Tanberg and super sweet TOL Awia and Elitest with his Esoteric (both up in Canada), I'll put my big Teac V-8000s in there as well, when it's not eating pricey MA-XG tapes for a snack (it needs some help, all these old complicated decks usually do).
Anyhoo, Nakdoc will chime in, he knows these rigs.
A pic of my baby, I'll take understated with good looks over that black thing any day
Let's see your Dragon and maybe we could help with the pricing better.