I am shopping for an entry level 15" 2017 on the deal and it seems that refurbished from Woot ( Amazon) is currently the best deal ($1646 with tax). However, I do not trust Amazon refurbishing process and am afraid that it does not come with the 4 year warranty on the keyboard. Please advise: 1) Do Woot refurbished ones come with a new battery? 2) Are they covered with the 4 year keyboard warranty from Apple? 3) Is it really the best deal?