Depends on what kind of information you are looking for. I would make sure that they have the Better Business Seal and verify that they are in good standing. Depending on how much information you are in need of costs range from $39. to close to $100. You are basically getting same or close to same info a regular PI gets. Once upon a time before internet was common place Private detectives paid to subscribe to use Data bases. As computers got more common they could tap into the data base with a modem that they rented. I have seen sites that give a little preview of what they have. Be prepared to also get some false hit info if you do not have a Social Security Number. It won't be the fault of the site or detective as they don't have any means of knowing what is close to right or absolutely right information.