Selling Price

Good morning,
I have never sold a motorcycle before, but it looks like I am going to have to sell my 2018 FJR1300ES (still undecided). What is the best way to determine a selling price?

Miles: 21,584
Garmin Zumo XT
Quad Lock Phone Mount
Aero Flow windshield
2 extra windshields (both VStream. One is the tallest, and a shorter one that's tinted).
Throttle body sync tool.
Tires look to be about half life.

The maintenance on the bike is up to date.

Thanks in advance.
Bill