In other words once the investor achieves a given IRR (negotiable but usually mid to high teens) they are considered paid off.

Most sophisticated private investors would require 20%+ returns for development deals (can easily get returns in the teens on non-development deals with large experienced operators); so, 8-12% is not a no-brainer...but investors like yourself do a nice job of securing those types of terms.

Once in my teens, I was pulled over to ask if I was old enough to drive. 

It sounds sexy but in practice, few can make that into a profitable endeavor.

But our 12 year old is a fervent reader and quickly read "Rich Dad for Teens" while we were on a vacation to Durango.  

Asking kids who are in their late teens to pick what they're going to do for the rest of their lives is ludicrous.

Not sexy and not crazy amounts of money but without the program I wouldn’t have met my partner and I sure wouldn’t have gotten any deals.

I concur with the flatlining rent rates, the upper-end rentals are getting tough because those teens are buying. 

I also got married just after the purchase and we have two dogs and two teens living with us. 

So, I am casting my net much further out to reach the National Investors who love our annual ROI's in the Mid-Teens.