I then ran a different ad and the cost was only 6 cents per contact. 3 cents higher than FB lowest estimate.

Those companies you asked about are more for deal finding and direct contact to off-market sellers, is that what you are looking for? 

I also contact the listing agent for the showing and to put in the offer.

The problem (as you have cited) is trying to understand what you need (you don't know what you don't know), where to get it, qualifying its source(s), and the validity and usefulness of all that.Pardon me if I've gone into this too much, but I meet many people with the same concerns that you are voicing and this is offered, as much as possible in direct response to your post.Please feel free to contact me if you have any comments or questions. 

I can connect you to a few off market contacts when you're ready if you'd like.

If you have any questions about any of our calculations, please send me a PM or contact our support team via our website.

We meet every month, and are in constant contact with these individuals, in business relationships going a lot deeper than that.The second way is to contact a large group of people with the understanding that only a few will result in “deals”.  

Does that mean the actual manager or a local contact.

He tells you to contact brokers in the area of the property & try to get them to find you a tenant within 2 weeks while you have the property tied up.The problem with that is the brokers will tell you they can't help you if you don't actually own the property.

I contacted Zillow about this issue but received no response.