As far as building credibility, make sure you are focusing on markets that you have a track record and expertise in.

Neither the model is STUPID nor I am loosing money. 

I completely agree with Austin and Jonathan—having a CPA with real estate expertise is invaluable, especially during your first year.

However, it does demand solid digital marketing expertise to see positive results.

However, it does require solid expertise in digital marketing to achieve positive results.As for list pulling: you've got solid services like PropStream and Listsource to name a few

This is an opportunity to confirm they have the expertise you need.

So they use broad strokes to entice new people to talk to them, but they don't have the knowledge or expertise to do the job.

Can anyone quickly share a math model of a the depreciation recapture scenario below?

WAIT as long as you can and don't die.This is easier said than done but it's a proven model to create wealth in your life that has worked for many people over time.I just borrow the down payment as a loan or equity in the property.

They do kind of the same model.