Price isn't always pre-determined in advance.

However, what I haven't expected is no return phone calls and responses from their websites.What I'm getting at is don't predetermine the outcome of those contacts and potential sellers, even if they are underwater.

Could it be as simple as I bring him a property that meets a predetermined set of criteria and he converts it into a mtg?

You could essentially pay yourself as you would pay any other contractor which could be by predetermined draw percentages or once the defined task is complete.

In my mind a true debiting service is a one time authorization by the tenant to reoccurringly TAKE the money at predetermined intervals from the account.

Then, after the predetermined timeframe has passed, (say two years), they try to qualify for a loan and use the money you have been saving for them as a DP.

Since we own this property together, would we need to form a LLC, partnership, with a predetermined percentage of ownership, say 35, 35 , 30%.

Any landlords use a hybrid approach, perhaps a M2M to vet a new tenant for some pre-determined period of time, and then roll that tenant into a long term lease?

The Option contract is a contract between the owner and the "potential" buyer giving the potential buyer the exclusive right to buy the property for a predetermined price during a predetermined time frame. 

Always financial, and based solely on what their predetermined plan tells them those numbers are...at each timeline in that plan.