i have never seen anyone on any RV forum, say they have bought one.
there's been more discussion on this technology, at RV.net than on this forum.
i suggest doing a search on the subject, on RV.net's Tech Issues forum.
bottom line is that it's too expensive for nearly any RV'er.
Dan-Retired California Firefighter/EMT
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity