Is this method considered against the law? 

However, she was highly demanding and I didn’t appreciate her negotiation method by intimidation.

Because those methods are fundamentally flawed.

Same issue with a Registered Agent.Either method are fairly inexpensive and very easy to do yourself.  

Quote from @Brian Bowen: Is there a good free method or resource to find owner contact information?  

Quote from @Jerry R Harris: Any real estate meetups happening in the Portsmouth, Chesapeake, or Norfolk area of Virginia?

It looks as if they hired out to H&R Block and didn't bother to check their math. 

Some services provide numbers that have been involved in litigation, so those are the ones you should definitely remove from your lists.If your lists are hyper-focused, you might manage to get by with fewer removals from the DNC list.There are also non-DNC-related methods available, such as direct mail and digital marketing.

V/r,Elias 

Or would you suggest other methods to gather data and insights before committing to a subscription?