I bought my 2016 MacBook in August 2016, second hand from CEX, a well known second hand electronics chain in UK. In theory I have a month to buy Applecare for it, since the 2016 MacBook was released in April 2016, so there can't be any doubt about it being less than a year old. Has anyone any experience of buying Applecare for a used product, with only the second hand proof of purchase? I have had hassle with Apple about proof of purchase even for new items bought from an official Apple Reseller. OTOH CEX give a two year warranty on second hand purchases, so it is covered until August 2018 by that, but somehow doubt CEX would cover the battery, which seems to be the most likely item needing replacement. I understand that a replacement battery costs £199, so I am somewhat torn about buying Applecare (£229) at all.