So, I live in Denmark, and here there are no official Apple stores. The only official retailer I went to today told me that a battery replacement for my 13" MBP would cost me a minimum of DKK 2000, which is about $285, and that I would have to wait 7-8 days for the service. That is not happening. My best choice would be to buy a replacement battery online. Any suggestions for a good, reliable battery?