Judy Diamond Associates Leads

Does anyone have any experience they would like to share about Judy Diamond Associates?   They are a research and data firm that I found through FreeErisa.   I'd love to know as much as possible about the contact information and how well they may/may not have worked for people in the past.  Bottom line is- Is it worth the money?  Some of the lists don't even have numbers so I would have to white page or spokeo all of these people to get a hold of them or send out a mass mailing.  I'd rather not mail these people but call them.   Any information from people who have gone down this road would be much appreciated.