My husband and I are considering buying a used Prius for the great gas mileage they get. He has a small commute daily to work but we need a new car and the Prius is at the top of our list. We have heard that they are a nightmare to maintain. If the battery goes out, a new one is $5000, stuff like that. We would greatly appreciate any comments about upkeep, maintenance, overall experiences, good and bad. Thank you.