Nicholas,
You should try to sell whole mount, 'cos I am not interested in that, not sure if it could be converted for some other OTA's? I would be interested only in smal circuit board inside the mount that controlls stepper motors, if the same of course

. And if you can't sell it as whole.
I bought my whole Celestron 80 GTL for $100 second hand from Quokka. It was working perfectly until I experimented with the car battery
I would still pay no more than $50 dollars just for this circuit board, no point spending money for such a cheap scope.
bob