It's unusual that they would willingly agree to a rent increase.

4.75 is not unusual for investment property right now.

It's not unusual that folks will ask for an application but then you'll never hear from them again.  

Nothing unusual here.

So if I can't get a cash-on-cash return of a MINIMUM of 9% (the extra 2% for the extra effort vs just buying an ETF), I know that it's not worth my time to do a deeper analysis, barring unusual circumstances.

As far as updating the education, I would let my knowledge of unusual loan products lapse and become well-versed in my particular markets or niches, such as multi-units to start.

In this day and age it is unusual to get something for nothing...

Even on the other end, when you don't have any of your money in the deal, you can still make more money by doing higher dollar houses and/or more of them (not to mention your risk of loss is way, way lower).As far as this deal, its unusual that someone would have 30 houses bought and not have the money to rehab them, but I could see me doing something like that on a bulk deal or something. 

And the outcome in the present market is very uncertain.

I try not to deal with listed properties.3) An investor/agent will not baulk at some of your unusually low offers.