We hired an appraisal company to do an appraisal knowing we were under the gun because now the seller is threatening to sue me and keep my earnest money.

The company yes, the loan officer no. 

That being said, all of these lead-generating companies do the same thing and often use the same data to source contact information.

Just a closing attorney that engages the title company.

I run a PM company in central CT called Ironclad Property Management. 

And I have had two potential opportunities "fall into my lap" that involve inherited properties that need major remodels to be able to compete in the MTR market. 

KW is a very popular choice for new agents because of the company culture.

Or suggestions for other companies that provide a similar service?

In solar sales (door to door) the setters typically make about this same range.Most companies in the house flipping world seem to buy lists online or run basic skip traces of areas and send lists to VAs to setup calls with the owner of the company.   

All the cheap properties are MAJOR fixer-uppers with no Rent Zestimates - probably because there are not enough rental data points.This one is priced at $135k with only $1,152 Rent Zestimate.