I got a new MacBook Pro a couple of weeks ago and there's little point in keeping the MacBook Air. I'm in the UK, looked at Cex but ~£250 seems a little low, I saw one go on eBay for somewhere around £400. I've sold an iPad on eBay before and had no problems so thinking of going that route. What are some necessary pictures? Pictures of it open/closed and in the box with everything else? Specs are: 2011, 11.6" 1.6GHz 4GB RAM 128GB SSD OSX El Capitan Also what's the best way to get this thing securely formatted? I've read a bunch of posts saying it's not possible without straining the SSD, and others saying SSDs are already encrypted so all it needs to do is erase the key.