$30 is not bad. Having a Carfax report on-hand is like having your whole medical records. But if you just want to take a peek at it, go to the dealership and ask how much they'd pay for if you would trade it in. Most likely, they would pull a Carfax report and get back to you with a low price. That's when you ask them why so low? Then 5x out of 10, they'll tell or show you the Carfax.