Originally posted by BigMackCam I tried selling my mint condition, totally-as-new DA*60-250/4 lens here in our Marketplace. After various revisions, my final asking price was half the current UK cost for a new one. I'm the original owner, the lens has barely been used, it's a premium model, unmarked and boxed with hood, bag, documentation etc. Not so much as a nibble... MPB would have bought it for around half what I was asking (which is fair enough - they have to make money too). In the end, rather than sell it for peanuts, I decided to keep the lens.
To a large extent, I think this is just representative of a declining overall market, of which Pentax is a very small percentage...
Your experience is not limited to Pentax. My wife tried to sell her old Nikon cameras after she upgraded, no market. Those were D700, D90, D810. She got them new when they came onto the market. After many years of not being able to sell the old ones she traded them in as part of a launch promo to buy the Nikon Z7ii and got +/- USD 650 for all three cameras as a discount on the Z7ii provided she bought the 24-70 Z lens as well. Took the deal. The old cameras were taking up space in the dry box.
I agree with @TexAndrews about getting a headache of all the Pentax price bashing. If you want to take nice pictures then get out there and use what you have. You want more capability then buy a "bigger" model that can do what you need. These are not investments. You want an investment? buy gold or some digital coin, but not cameras.
After using my 645z for seven plus years it is still performing flawlessly and I am still learning new capabilities of the camera. I've used mine in extreme temperatures from +45 degC to -34degC and it never failed. It is a balanced camera and if you care to learn it you will not have to fiddle with menus in the field, key functions have buttons you can control while wearing a glove. I seldom use a tripod and I don't need a FF camera, I use the 645z. I also have a KP with very low shutter count, nice camera, but I hardly use it, don't need it.
Sorry for blowing steam :-)