I’m considering buying a 2001 Prius from a friend. He put a new battery in the car two years ago and my friend thinks that the value of the battery should be added on to the Kelly Blue Book value of the car. But I was under the impression that this is considered maintenance and is already accounted for in the KBB price.
If the Kelly Blue Book value is about $5,500 - $6,000 and he paid $2,800 for the battery in 2010, how much does this change the value of the car?
He thinks we could depreciate the value of the battery in half (so, $1,400) and add that to the price of the car, putting it at $7,400.