I need to replace the battery for my early 2009 17inch unibody MBP. I don't see it listed on the Apple store website, and the OEM product is not listed at Amazon. There are a few very negative reviews online of replacement batteries that users tried to use as substitutes. Has anyone had any good experience with a replacement battery for this model? Which brand and where did you get it? Also, how much do Apple Stores generally charge to replace this battery (parts and labor) if I am forced to go that route?