Let's say a seller signs a listing contract with a traditional agent and that agent charges a 6% commission.

In exchange they will charge you a higher interest rate.Hopefully one of those 3 can work for you. 

The commission you charge yourself is one of your costs as selling as a consumer.

They do mandatory yearly inspections of all rentals, and charge yearly fees for each unit.

With that said, yes, they're taking advantage of you and you need to take charge.

I'd like to get ideas of what people charge, what goes into it, etc., etc.

Are you sure you can charge $100 late fee?

Once they hit the MLS or LoopNet they are usually charging top dollar.

If you are using PM, then they will take care of the cleaning and maintenance, but they charge upwards of 25%. 

What I’m looking for is an example of an “Exclusive Right to Lease” agreement for a commercial building and some guidance on how to charge (not fee specific) and maybe some tips on marketing such an animal.