I listened to the case study of Josiah Grimes on the collapse of wholesaling: https://www.astroflipping.com/... and he said that wholesaling is collapsing, which I find really hard to believe.Does anyone know what it is or what the difference is between astroflipping and wholesaling? 

For single tenant NNN the thing that you need to underwrite is the tenant main business operation, if they collapse you lose money with this deal.

It is a house of card that has collapsed on 2008-09-10 and 11 and now it is starting to happen again.

It can be due to too much total time elapsed, too much time spent w/ a previous offer where the lender wouldn't meet the buyer's price, and negotiations collapsed and the house went BOM, whatever. 

  :)I feel that unless there was a collapse that I could get backing if I needed it. 

The changes in underwriting criteria has made it much more difficult to buy a house and the people who buy a house to live in are lower in number, but can actually afford the homes that they buy.While it might be true that we are near a top and might have a correction on the horizon, it's unrealistic to say the correction will resemble anything close to a collapse.  

This happened in 2008 during the brink of collapse.

Everything changed after the housing collapse though; as all the speculators were wiped out, and the new price points suddenly made a lot of sense for flippers and their new buyers.  

In fact, lots of experts are saying that the housing market should largely be excluded from the coming collapse, because it is not the reason the economy is struggling, as was the case in 2009.

@Daniel 50k in remediation expenses on a deal worth 1.4 million seems like a pretty minute hiccup on that deal I can't imagine the profit margin on that deal would be slim enough to collapse a deal over 50k... but I understand what your saying for sure and is a very valuable point.