I had issues with the battery of my sole MacBook Air. The thing was still under warranty, but I since I needed it for work, I couldn't afford to let it for one week under the care of the local Apple licensee while they were ordering the part (which is mandated by Apple, no way around it).
I ended up buying a battery on iFixit (I had already replaced the battery of my previous model), only to realize that iFixit wasn't selling Apple parts anymore. The "aftermarket battery" I now have is less that ideal, and apparently there's no way to source an OEM battery anymore.
So it's nice we have the right to tinker with our machines, but if there are no spare parts, the point is moot :-/
What makes you think the ifixit part is bad? I have found the unofficial parts they supply are of superb quality. I feel bad that I have never used the tool kit it came with again because its of such a high quality.
I ended up buying a battery on iFixit (I had already replaced the battery of my previous model), only to realize that iFixit wasn't selling Apple parts anymore. The "aftermarket battery" I now have is less that ideal, and apparently there's no way to source an OEM battery anymore.
So it's nice we have the right to tinker with our machines, but if there are no spare parts, the point is moot :-/