I have a late 2013 MacBook pro 13 retina and am thinking of replacing its battery and using it as a backup machine. The battery is slightly bulging and has only 75% capacity after about 500 cycles (which is odd, because I thought it was supposed to hold 80% capacity within 1000 cycles). I looked at Apple's website, and it says the cost will be $199. Reasonable I thought. So I contacted Apple Customer Support and was told it would cost freaking $494.95 to mail it in for battery replacement. I also tried my local Authorized Service Provider and was told the cost was around $330. They can't tell me how much it costs if I bring to Apple store, because they need to evaluate it first. Has anyone ever succeeded in replacing battery at $199 through any official channel? If not, it probably makes more sense for me just to trade it in for a few bucks rather than spend a fortune on replacing its battery.