Since we were looking for a used car for my daughter in a low price range, we figured there was a high chance of getting a lot of junk out there. I figured the one month fee for unlimited checks would be worth the price and it was. There were at least 3 cars we would have purchased if it were not for the fact that Carfax revealed issues. One car, which seemed it was a very good price for the mileage, revealed that it was in 2 major accidents, one deploying the airbags. Since I wasn't concerned with accidents if they were repaired correctly, I went ahead and viewed this car. Knowing that there were accidents involving the front and another one that involved the rear (Carfax revealed this information), I looked very closely at the front and the rear. Both areas were NOT repaired and my extra discretion also revealed that the entire car was repainted (badly at that). The dealer could not verify nor guarantee that the airbags were repaired correctly so we passed on this vehicle. A second car revealed a rebuilt title, a salvage from a flood upon further investigation. We passed on this as well. We actually found a couple of more cars that we would have purchased that also had salvaged titles and Carfax saved us from these purchases. The car we finally decided upon was a one owner but dealer auctioned vehicle. There were no accidents and Carfax even showed a pretty good service history, which may not have even been complete, but the frequency of the previous owner servicing showed a caring owner. So far, the car we purchased has been perfect and we got it at a very good price (Carfax gave us a pretty good guide suggesting price deviations so it helped me negotiate a fair price). Considering the risk and amount of a used car purchase, $50 bucks for some Carfax research went a long way.