I find that this helps them to really be able to focus (others, not so much).Second thing I have them do is consider hiring me (or somebody else) to keep their books on a monthly or quarterly basis. 

January rent has not been paid to the property owner, as I am sure the lease spells out, but to someone else.

I looked into the maintenance option years back to discover a trend of:  apx. 8% monthly fee which only included rent collection (everything else from maintenance to turnovers etc, extra, and poor reputation on repairs.)

If it was not him sourcing the land, it would be someone else.  

., for their clients.Many will say, "that's the investor's problem".They are correct because an investor should NOT rely anyone else to run their numbers.So, then what exactly makes them investor-friendly?

If nothing else it will change how and where many live. 

He markets himself to no end and I see more stuff from him than anyone else, but he is one giant sales pitch. 

For long term, the main benefit is having someone else pay off the mortgage on an asset while you collect cash flow.

Was it more about the marketing, the amenities, or something else entirely?

I agree with what everyone else has said, those figures seem extremely high.