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 long term maintenance on a Prius is less than a gasoline vehicle with an automatic transmission. Brakes and tires and things like that are the same as a normal gasoline car. The expensive parts that separate the Prius from other vehicles is the controller and the battery. You can expect about 10 years out of the battery. A cottage industry is growing for rebuilding Prius batteries. Now the price is between $1,200 and $1,500.