We have purchased 6 of these from them in the past 6-8 months.
No problems at all. They are basically brand new. I believe they replace most of the internal parts and electronics - the shell is cleaned and shined like new.
I’ve worked for 2 places that have purchased from Northern Pizza equipment, and I purchased 80% of my equipment from them as well. (some new, some recond. ) Only ever had minor problems - they do a good job.