As far as I know, the 'current' version is EV3(quick search didn't find anything after that model), which came out in 2013; so, I doubt it is being used a great deal, aside from those who bought one before Lego started selling the EV3 (NXT2 was only around for ~4 years before its predecessor)
I personally was a big fan of it, and sad the see them now using something that looks like (or is a version of?) Google's Blockly. I guess maybe they wanted something simpler.
If you find a club or school that could use it, certainly go that route. If not, I have a niece that would probably love it, and an uncle that so her all sorts of neat things (was almost considering the EV3, but I almost don't even want her to see Blocky... I may be biased 😉 )
Good luck in your search, and if you really have no were else to send it, I would be willing to pay for it to be shipped (which probably wouldn't be a huge difference than buying it off eBay where it's ~$40 in a lot of cases, but I'm assuming you know yours is functioning).
Best