You’ll need to pay MLS dues for access to MLS which in some areas requires NAR/ board of Realtors membership (~$2,000/yr in my market).

My parents live out of state and the purpose was to give them a place to stay for an extended period of time and we will Airbnb it when they aren’t here to pay for the property.  

You then will pay some long term capital gains, but you also have to take depreciation recapture. 

At least make Rent to Retirement pay for advertising!

Originally when they were known as FlipOS, they would split up the interest payments,so I would pay the remaining amount for the month the house was purchased and then the remaining balance on the sale of the home to them.  

Debt Reduction - at the very least, another human being is paying down your mortgage and increasing your equity.

The tenant fails to pay their last month's rent and leaves the place needing new flooring and paint.

More likely, he is hoping to use the extra time to collect more rents and thus more fees to generate the funds to pay his owner clients:(

REI is pay to play. 

Do I really have to pay 8% of the security deposit to the PM?