This is a rather interesting thread. A month ago, I had to replace the battery pack on my son's 2006 Toyota hybrid. Yes, I know it is a hybrid and not a direct comparison, however, my point is that the Toyota dealer wanted a ton of money to replace it and my son would have to wait 2 weeks for them to get one. On top of that, it would be warranted for only 1 year. So, I called a 3rd party company with high ratings that comes out to the house and replace the battery. Within 2 hours of calling on a Sunday morning, they came out and replaced the battery. It cost 1/3 the price of the Toyota quote, and the warranty is unlimited mileage for as long as he owns the car. Imagine that.
I'm not suggesting a 3rd party company can help you. The thread just reminded me of a recent experience with his hybrid.