I've got one in pretty rough shape that I've been considering selling. It's an S17Pro but one of the cards is a bit finicky. I find it needs to be restarted every so often to function. Probably not what you're looking for, but maybe you're more into troubleshooting these things than I am. Let me know if you're interested at all. I'm not really motivated to find a buyer and have no problem letting it run as is, but figure I might as well offer in case we were able to make a deal. Good luck with your search. I'm sure there are plenty of miners out there for sale somewhere.