What the DOJ and consumer advocates are saying, is that buyers and buyer agents should be setting the buyer agent compensation amount, not the seller.

Additionally, I expect applicants to follow instructions in the advertisement and application, to make and keep appointments, to show up on time for appointments, dress and behave appropriately at appointments, and in general demonstrate throughout the process that they are someone that is easy and pleasant to do business with.

What you are describing is a "dual agent" role, where the agent represents both buyer and seller.

Whenever I have used seller financing as a buyer I always put in the note that the note holder must give me the first right of refusal to purchase my note at the same discount they are selling it at.

But there will be some markets or sectors that are buyers markets. 

It had zero affect on me as the buyer

Your potential buyer suggesting you terminate the contract and them paying you a fee does sounds fishy to me.

Needless to say, our first Landlord experience was not pleasant.

So this buyer might have bought during their one off days and they have moved on..

It focuses on the increasing number of real estate investors in Indianapolis and how they're outbidding retail buyers.