I agree if it is useful they will buy but honestly most of the miners I see right now on Ebay are literally not worth even looking at if its built prior before 2016. I got trapped on 2 miners myself in my early days. Bought 2 antminer S4s without doing the cost of electricity vs profit margin. If I run them 24/7 for a month right now, I actually owe the electric company here more money than I earn lol. People are in droves trying to pawn off these same exact miners I bought to upgrade their equipment. Maybe when Bitcoin hits around $5000 a coin it might be worth firing up again but we do have to crunch them numbers on these machines, older styled used ones tend to never return your investment anymore. Mine just sit offline collecting dust, worst $500 I ever spent lol...but I was new to this stuff back then and paid for the experience I believe lol