I'm not an expert, but there are some here (Jon, Dan, Tom, and perhaps one or two others) who could give you a better idea.
I have the same scope, but is basket-case condition (sat in a field for untold years), so my experience doesn't help.
The problem with value for such a scope is the same issue you had - size and suitable observing location. I'm going to build an observatory, but short of that, it needs to be on wheels and have a decent place for storage that is handy. Prices I've seen are somewhat all over the place. The problem is, I think, that even "pricing for a quick sale" will not generate a quick sale unless totally stupid cheap, and then someone would simply try to flip it. What I'm trying to say is that you should expect it to take a while to sell. A 12.5" Meade Research Grade (very similar scope) took forever to sell in SoCal (we know that scope well because Jon gave it to Justin who ended up listing it on eBay for around a year).
If it were me, I'd probably look to list it for $1,200-$1,500 and be willing to move on price if a serious buyer came along. The scope is probably worth more than that, but the demand for such a large scope is limited. Location can play a factor as well. I've seen lesser scopes listed for more, but they tend not to sell. And I've seen similar scopes sell quickly in this price range, but not that often.
So how is that for being equivocal? The market for large reflectors is at an all-time low I think. And often those who do want one end up with a modern HD Go-To mount. Great scope though and good luck.