you could make a stealth advert in the chat section of a forum frequented by people that might have the funds and interest in said camera… 😉
Amazon does sound like a good bet I guess. How is the money handled? is it fairer in the case of a dispute than paypal?
I would say sign up to a photography site bit it’s not really on to sign up to sell. Do you know anyone on one who could sell on your behalf?
edit: craiglist just makes me think of dodgy scams and random hook-ups.
Decent couriers will offer suitable insurance.
You could also go to your local camera store that does used stuff but it will be like selling a car to a dealer I guess. What you lose in money you will gain in ease of transaction and security.