You are correct on tires. Batteries, though? Where I'm from many know how to do it and only a few pay. Sometimes the guys at auto zone will replace it for free

You are correct on tires. Batteries, though? Where I'm from many know how to do it and only a few pay. Sometimes the guys at auto zone will replace it for free or some dude in the parking lot is happy to help. Or that friend at work. And so on. A few cars have a more complicated path to the battery and you have to remove things, but it isn't usually a problem.