I would take a desirable B class with a paper 6-7% cap that offers sustainable income and real value add opportunities than a C class showing a non existent 9-10% cap.

Even if there is currently a spread between the 3-month Euribor and Bonds, is this sustainable?

In most cases, real estate is a vehicle where mistakes can be sustained and still make a profit. 

Do you think their business model is sustainable?

I'm ready to get my feet wet and start educating myself on the ever changing real estate business not just as a get rich quick scheme as so many people come to believe  but to provide comfort and sustainability for my family and I in the long term aspect of things.

Next, create a budget for the next six months so you can sustain a marketing campaign and follow up with multiple mailings per list.

My long-term goal is to build a sustainable real estate business for many years to come. 

It's nice to be in a market that putters along at a more reasonable (perhaps even...sustainable?)

Historically, that is a good rate that only seems high now because we are so used to the artificially low rates of the last few years in these unprecedented times of sustained low rates.

Not sure how much net profits these flippers are seeing, but I'm seeing purchase prices of low 600s with sales prices of 850k+Not sure how much more that area can sustain though.