hello guys, i am planning to buy the MacBook Pro base model 2016, now I have two places I'm considering getting it from. One is from Best Buy that is Open box- excellent geek certified, and one from eBay seller that has the item new and sealed but obviously no receipt. To be honest I'm considering the one from eBay since it's unopened and I never really bought anything from Best Buy that's open box so im a bit hesitant (but please let me know your experience if you bought an open box certified from them and how warranty works and so on). I guess my question is does receipt matters in terms of the 1 year manufacturer warranty from apple? Let's say if ever there's some problem that occur in the future and my laptop is still covered with the 1 year warranty and I bring it to Apple Store, would they look for the laptop's receipt? Also, if I can still purchase the apple protection plan, would they look for the laptop's receipt also or all they need is the laptop's serial number and there would be no problem?