It's only $199 from Apple, and it doesn't void your warranty.
Guess you didn't read the article - it costs $500 to 3rd party because they would need to replace the "entire upper case assembly along with the battery". It isn't $500 for the battery, but the battery and upper case assembly.guess Apple taking a loss when replacing battery so design moves forward.
I really don't know why. One of the great mysteries that can be found inside MacRumors.I recently gave my original MBA away, it still works great and has original batt in it, working at 90% capacity. 54 months, no issues. If the next round of laptops hold up like that, who cares what a batt replacement costs? But why *would* anyone go the third party route?!