The problem with trying to analyze this is your analysis is based on percentages, many of which don't relate to any of the other ones, and are very misleading. 

Cost-wise if you go with a split fee office you typically don't have to pay anything if you're not selling, but you split commissions with the office, usually up to a top amount after which you may get 100% or at least a higher percentage for the rest of the calendar year, then you start over again.

$23k expected profit on a $520/$530k sale is just too low of a percentage. 

So, they are buying an Option to purchase a percentage of ownership at a later date (25% of the future equity in these deals works out to be a 25 to 30% annual yeild).

After which, they can only raise a specified percentage.

What percentage of the rent would you save to account for vacancy in Eagledale?

A cheap Class C or D property might still require expensive repairs (like replacing the roof or water heater might cost as much as on a B property) so using a percentage of rent for it it might not be wise and reflect reality. 

Hi guys, brand new to real estate and have been listening to the bigger pockets podcast. On an episode someone mentioned using peoples low interest savings as property investments with a higher return from you. So fro...

Funding is almost entirely cash and we’re looking to add a greater percentage of financing.Problem is that traditional mortgage lending is too inefficient.  

Is it possible to find someone who need that kind of work done on a flip property that I can do and after the sale I get a certain percentage off the profits?