CROOKS AND LIARS!!!
Similar story to Liz E. above. I bought a car from them, CarFax (at the time) was clean, and when asked they said the car was not in any accidents.
Fast forward 2 years, I run another CarFax, and the car now has an accident in its report. Turns out accidents in Pennsylvania can take a long time to show up on Carfax. But I'm sure they knew about it when they were selling it to me, and decided to lie instead.
Avoid!!!!