Re point 1: no, what several on this thread are laughing at you about (yes, at, not with) is getting wildly bent out of shape about battery replacability yet admitting you haven’t replaced a dead battery on your own laptop. If you won’t swap out an easily-replaced battery yourself when warranted, don’t get bent into a pretzel when doing it on a MacBook takes a few hours while shopping.
Once I buy a new Windows 7 laptop I will probably and only then try my hand at replacing the individual cells within the Li-Ion pack myself and the cost will probably be under $20.