I've been reading the back and forth on this for a week or so now.
As much as I like that new scanners are available, these units IME are pretty indestructible(I have a V700, plus a 4990 bought more recently when I needed a scanner in a pinch and couldn't get to my V700-thanks to USPS the 4990 took a trip around the country and I got it after I was able to retrieve my V700...so haven't done anything beyond make sure it works) and I imagine that the market is pretty well saturated with a lot of the folks who would buy one already having one.
WIth that said, I'd not paid much attention and for some reason had it in my head that the 700 series switched to LEDs, something I've learned was wrong thanks to this thread. I guess that makes sense given the amount of time I've spent waiting on lamp warm-up in the V700. That makes me want to go out and buy a V800 or V850, but a new V850 comes alarmingly close to what I could buy an older Imacon/Hasselblad for...
Incidentally, my main pressing use for getting mine out of storage was to scan 65/70mm film, something I couldn't do on my Nikon 9000. I just took delivery of an aftermarket 8000/9000 fluid mount, which easily handle 70mm film(wet or dry) so unless I get seriously back into large format my V700 may sit for a while again...the Nikons have their own quirks, but I've used them so much more I know those quirks better than I do the Epsons.