Many of the cars listed do not include free Carfax or list of all features that are on that car. I find this very troublesome. I do not want to talk to a salesperson about a car without first viewing these items.
Then don't talk to them, only look at cars where they give you the report. CF's cost money and some sellers don't want to spend the money (or they don't want you to see the CF). Buy your own Fax if you are a serious buyer. There are a lot of fake CF's going around!