Buying a Former Rental Class C. How many of us out there?

Hah - tracked this conversation down at last. Clearly I need to pay more attention,
OK - so I'm looking for some advice. I have a 2016 CA 31 (Thor Majestic) which we've done a lot of work on to make it more accessible. Power lift, folding table & swivel chair instead of the couch etc etc. Also the standard steering and suspension as well as solar power. Probably spent the best part of $50K on it. Unfortunately my wife has got to the point where she really needs to be in the wheelchair all the time and the rig simply isn't big enough to deal with that.
I realise that I'm not going to get back much, if any, of the money I spent on upgrades but given that it cost me about $34K in 2020 is there any guidance on what a good starting price for a sale would be?
Also - any recommendations on where to advertise it? I know about rvproperty.com where they have an accessible section and obviously RVTrader. Any others?

Thanks
Derek