Let's not get pond negative here. In my reality, my pond is SO MUCH LESS WORK than the grass I used to have to fertilize, mow, trim, rake, etc etc etc. Not a whole lot of enjoyment out of that. I also have a small pondless - love, love LOVE it, but I don't get anywhere near the joy or relaxation or stress-relief that I get from my pond. The fish, the plants, the water, the constantly changing views. It's been a game changer for me. To put it in perspective, my husband has a medical condition that makes travel nearly impossible for us, so we don't really "vacation". So my pond is it - my vacation spot. Will there come a time when the pond chores ARE too much for me? Probably. But luckily I know a few good pond companies that I will happily pay to keep things in tip top shape. I just don't want someone new to ponds to read these kinds of messages and think building a pond woudl be a mistake. A POORLY CONSTRUCTED pond would be a mistake. A well built eco-system pond will be a joy for many many years.
ANYWAY -
@mrsclem I do get that times change, lives change, priorities change. No shade on you AT ALL. You've been at this a long time. I would try a facebook marketplace listing in your area to start and gauge the interest of pond people in your area. I might also reach out to local pondbuilders - if you know any who are really good - and ask if they happen to know of anyone who might be interested in building a pond but the investment is too high. Or maybe they know of a school or retirement home that is considering adding a pond for students or old folks to enjoy and could re-purpose your equipment. Being realistic about what anything used goes for these days will help - when someone is looking for used, they're looking to save a bundle. Like
@GBBUDD said - I'd list it as all or nothing. I wouldn't get into selling components or you'll be at it for the rest of your days!
Good luck to you - I hope you can find a wonderful home for your ponds!