Original owner, excellent condition. A tremendous value and a very fun and satisfying speaker, can be driven by pretty much any amp you like.
I bought these new from Zu in 2017 and did the Clarity capacitor upgrade a few of years ago (a surprisingly worthwhile improvement). Zu now offers a Jupiter capacitor upgrade (user-installable, very easy).
The only notable cosmetic issue is an area of small scratches on the top of one the units, which I think looks worse in the photo than in the flesh. You could easily touch it up if it bothers you. I have all accessories and the original shipping cartons, though I prefer to not ship them. My low price of $700 assumes you pick them up from me in Redwood City, where you can audition them first of course.