Hey Grpre95, you may want to check around to get a better price. That is the dealer price I bet. If you know of a good indy shop in your area, you may want to have them do it for you. The battery for the 6 is more available now from other places so you are not limited to getting it from the dealer. the issue is getting it registered and if you know of a good shop that works on BMW they should be able to do it.
2008 650 Convertible- 6 Speed manual- Sport package- HUD- Lane Departure- Comfort Access- Merino Leather- HD Radio- SAT