I'm considering purchasing an IPAD AIR from Craigslist for $420 US dollars. I normally would not do this,but I can save about $100. My question is more regarding the warranty on this device since I purchased it outside of a retailor. Is there a way to protect myself and make sure I can still get Apple support/warranty? Lastly, know of any deals that come close to this price so I don't have to purchase through CL? I would even take paying full cost,but I'd like to get some type of a gift card or something to make up for the difference in price.