I’ve decided to maybe buy a nicely used MacBook Air before the end of the year. So, I’ve been searching eBay obsessively, as I am wont to do, for a deal.I noticed one on eBay that the seller said had a few worn keys, and that seemed to be keeping the price down, so I hit Google to see how hard it is to replace keys on the newer MacBooks.
Here’s a great video laying out the task at hand:
Todd Stauffer 
wow! thanks this keyboard replacement i didn’t think it was this easy.