The best time to go to Magic Mountain is in October, the last week they are open during the weekdays (the week of Halloween) on that Monday, Tuesday, or Wednesday.
You can replace the hybrid battery pack for $600â$2000. It will be more expensive to do it at the Toyota dealer, and the model of the car also affects price. I have had 3 Priuses in my family, and only had to replace one battery pack (200,000+ miles). I ordered a replacement battery pack from a rebuilder and had it shipped to my mechanic, who had no problems changing things out. The total cost was $1200, back in 2011.
The cost of the pack varies with the year of the Prius. Replacement batteries for the 2001-2003 Prius cost $2,299, and those for the more common 2004-2009 model currently run $2,588. Labor costs could total several hundred more dollars if you have to replace the pack, for whatever reason.