To some extent, there's a general resurgence in "vintage" digital (and film) cameras.
[Can't post a link because I'm a new member but title of article is "The Hottest Gen Z Gadget Is a 20-Year-Old Digital Camera"]
Anecdotally, I bought a GR Digital III back in mid-2020 to see how I liked the form factor in order to more seriously consider getting a modern GR III. Bought it for $150. Used it a few times and decided I really liked the form factor but held off on buying a GR III, but didn't use the GRD III because it was so dated, and left it sitting in its box in a closet. Last year ago, maybe spurred on by the above article, I figured I really ought to sell the GRD III to at least get it to someone who'd use it. At the time, I couldn't remember how much I had bought it for, so looked up sale prices on eBay and put it up for sale for $240. A few days later, a local buyer contacted me to buy it and, when we met, he told me that he wanted it specifically because of the retro appeal of the older CCD sensor.
I just took a look on eBay and it seems that GRD III units that are in great condition, with all packaging, are selling right now for $400+, even $500ish. I felt a little bad I sold it for a profit, but now I feel bad that I didn't hold on to it longer because I apparently could have made a multiple in profit.
I had a GX200 and loved it back when it was still a relatively current camera. Got it used, along with a wide angle converter and the EVF. Loved it. Just thought it was the coolest thing. Still think it is, though I don't see any appeal in much older and technically inferior digital sensors. If I go back in time, equipment-wise, I go back further, to film.
Just checked going rate for the GX200 on eBay and it seems they sell for around $200.