Can someone help me understand how much compensation we can actually ask for?

If you are able to generate leads for other wholesalers, investors, builders, etc. they would be more than willing to compensate you for that.

I don’t see a need for compensating them in any way.

First, as @Ashish Acharya pointed out, merely changing the form of compensation does not cancel the requirement that you spend more hours in real estate than in your other money-making pursuits.

Should you have a bad event in one entity (right now it's just you), you have this big bucket that can be drawn from to compensate for losses.

if self managing, you deserve to be compensated for managing 13 units.  

The seller will want to know that if they have to foreclose that there is some equity to compensate for the hassle. 

Don't fall victim to the shiny object syndrome.

Require General Liability, Workers Compensation, Business Auto, and depending on what they do, possibly Professional Liability and Pollution Liability2.

It is also expensive from the Realtors point of view, I cant imagine a person wanting to work so cheap $20-$50 per offer.I would think if I was working as a Realtor I would want to average $250-$300 per offer submitted or in other words get paid a commission at least 1 for every 10 offers submitted.If your Realtor is making a commission on only 1 out of 100 offers plus $20-$50 per offer, then their compensation is not anywhere close to what I would consider realistic and you are complaining that it would get expensive.ALSO your Realtor is going to run into the same problem you are having where the listing agent won't bother taking their call or returning their messages EVEN when they are working with a REAL buyer.