In your experience with them in your studio, what are the major issues encountered where spares would be a problem?
Can you let us know what spare parts the bike would require other than the friction pad for the flywheel?
What are the consumables that would be a problem?
There is someone trying to buy a working one at an affordable price, can you shed some light on the above as well as what can and cant be done down the line. Im sure that would go a long way in building ties with "potential" customers down the line by assisting with some solid advice on something they or anyone else can use now.
Not everyone can afford a brand new smart trainer right now in these times.