Hi All, I need to replace my battery as it has begun failing and also got swollen, effecting my trackpad from working too. I am unsure if I should purchase the replacement battery from Apple or other 3rd party sellers. Apple seems to sell batteries at extremely higher prices than 3rd party sellers at Amazon. But I don't want to use bad quality hardware so it will be helpful if someone could help me recommending replacement batteries at good price. Im using a Macbook Pro 13inch, Core 2 Duo (mid-2009) model.