I don't know the going rate for it or even the popularity, but the explosion of
vaping gear on the market in the last few years has made it hard to get a good return on something unless its super high in demand and hard to get.
If you set it at what you will be satisfied with you may get it, and if no takers you usually get some offers (in the classifieds here). Its free and I've sold over 60 times here in the last few years.
I used to jump on high end
devices in the past all the time, knowing that i could easily sell them off to make room for others, but today with all the clones and so many different devices, its a totally different ball game...