I've sold multiple laptops on eBay, and have had tremendous luck. I've been using eBay since 2008 as a seller, and if you're looking to get the most money for what you're selling, then it's the way to go. I'm in Canada, so it's basically sell via Kijiji/FaceBook or eBay. I prefer not to do face to face, so eBay is much easier.
My most recent transaction was I sold my 2015 11" MacBook Air (fully loaded) and was lucky enough to get $950 for it, which was only $50 less than what I paid for it over a year ago. This has happened a couple of times when selling MacBooks, as they hold their value, but all the same, there are people out there quite uneducated on Apple products and their pricing, so they may tend to overbid.
The only thing to watch on eBay is whoever is bidding on your items. I usually contact any bidders with zero feedback just to make sure they are legit. Sometimes, there are people with brand new accounts and zero feedback that will bid on things just for the hell of it, or otherwise, it's some kind of scammer. Luckily, you are able to cancel their bids and block them from future bidding of your items. It can be a pain sometimes, but may save you some time and headaches down the road.
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