Whats your location?
I am in the USA and I would go with:
1. Craigslist - no fees, final sale, no packing or shipping
2. Phantompilots.com - no fees, 100,000 members
3. Facebook Marketplace - no fees, local and distant customers, see who youre selling it to
4. eBay - It will sell for sure, international audience, 14% fees for eBay and Paypal