Yes, 7/2019 is an early build. My build was just a month earlier 6/25/2019. I've had no major issues but consider myself fortunate. If it was not sold until 7/28/2020 it almost certainly was a demo or given for use to a high ranking employee (ie. manager). It's strange someone bought it and owned it for only 4 months. Many, but certainly not all, of the earlier builds were sent to Flat Rock, Michigan for trouble shooting. There is no telling if that is a problematic one. For sure, I'd be willing to bet the dealer would accept $3k off their asking as people are getting $51k for remaining BRAND NEW STs with the same MSRP. As an early build, I would have the dealer update all the modules listed in the service bulletin 20U29 to bring it up to current versions.