Fair has nothing to do with price. Fair can be used to the price of your car down. The market decides what your car is worth, and this boils down to one person who decides exchanging X number of dollars for your car is an equitable exchange.
For where to start the process, the best advice I can offer is visit www.kbb.com
or NADA Blue Book | Used Car Values | NADA
and plug in your car's numbers and see what the price is for your car in a private sale.
Note the sites may not agree on prices. Not your job to reconcile price differences. I'd go with the site which offers a higher price.
Remember price is not fact only an opinion. But you are entitled to your opinion. Be prepared to justify your price.
Condition plays a big role. A huge role. With just 2300 miles the car should be "like new".
To this end, the car should be detailed to a "like new" condition.
There should be no outstanding issues. If there are any TSB's/recalls/uConnect updates, etc., these should have be applied. And you want documentation these were done.
All the manuals and other literature the car came with should be present.
Tires should have a reasonable amount of tread and the wear should be even front to back and side to side and across the tread faces.
Services should be up to date. Possibly the car is due -- based on time if not miles -- and oil/filter service. Get this done. Be sure the right oil/filter are used.
You want to be able to stress to a prospective buyer he can enjoy the car a long long time before any services are required, before tires need to be replaced or brakes need to be replaced, even before the oil needs to be replaced, etc.