The low use on boats is not particular to Ranger Tugs. I've been in Anacortes Marina for three years, go out on my boat year round to San Juans, and I rarely see the vast majority of boats in the marina move... ever.
There is certainly more at play here than 'Covid' boat buyers not using their boats.
Agreed with the points made earlier in this conversation, that you have to enjoy working on your boat and you have to be ready and able to assess and pay for moorage, maintenance, AND professional work that needs to be done.
I bought a 2011 R-27, could not afford new one. I fully expected to invest in boat, which I have, upgrading virtually all electronics & chartplotter, new transducer installed, new canvas enclosure, annual detailing, engine work including new turbo. Great investment as we really enjoy our time on the boat and go out every month.
As for Flyingnorth's last question, do not be afraid of a diesel with 1270 hours on it. I am closing in on 2000 hours on mine and it runs better than when I bought it, seriously. The better question is whether you want a outboard or inboard. Different boats that handle and run differently.