The most important thing you do first is to invest in your self meaning learning, network, get involve with local RE investors organization and most important interactions with others on BP and read the newly mint published BRRRR book.

There's actual data published by respectable organizations.

But neither may be published yet.

There are plenty of published stats from the Real Estate Commission that indicate schools with the highest pass rates and which instructors have the highest pass rates as well.

There's also like a podcast they have on youtube released when they first published it, promoting it.

Have a look at BP's blog where new articles are published every day: https://www.biggerpockets.com/blog 4.

Give it a couple years, after books start printing on the strategy and it will be all everyone talks about, after it's a dry well of course like most post-publishing strategies.

For example, Hawaii which is a tourist state does not collect or publish crime data(yeah, it's worse than you think).

Or it could be that the agent has worked out a deal to give himself time to sell it himself and double-end the deal.In MA, the local MLS (MLSPIN) requires a "Non-MLS" form if you're not going to publish a listing within 24 hours of signing the contract.An open listing, as you've stated, is one that is not an "exclusive right to sell".  

I will update the calculation and publish here my next iteration.