The key is to not get too greedy.

Also realize that some property managers bill a property owner/add a % to the tradesman bill, which is just wrong, IMO, as one would think that should be included in the base % the PM gets every month, but some are greedy (it's typically outlined in the PM contract but it's still greedy, IMO).Also, I'm going to work harder to get the best bid for a repair from reputable tradesmen as it's my money that's being spent. 

Lenders are also known to re-trade rates and terms mid deals .

Would you trade rates and points for service?

I had all the proper disclosures and had an entire plan, but they were greedy and thought they should get a cut of everything.

Most individuals look for much higher return rate than banks.A similar situation is that a retail equity trader looks for much higher return rate than hedge funds.

If it's not a situation where everyone wins, then something is very wrong.Otherwise, as long as my company name isn't involved in the deal, then more power to you - go forth, be a capitalist, and prosper.Brokers who balk at the idea of their agents making money in real estate without them are either greedy, or scared because they don't understand anything beyond a "traditional" sale.In Seattle, I would highly suggest looking into the local REIA - aka REAPS.

Sure, I turned away a potential client, but I would rather not work with someone who comes in being so greedy like that.

Moral to the story be careful and do not get to greedy especially if you new about the issues before you made the offer to me it has always seemed unethical and when it happens there is always more coming from those type of people.  

The broker may not want a commission, but they may want to know what's going on to cover their donkey.The brokerage will probably want some type of transaction fee from you (those brokerages are all just greedy ;) ).