The local homeowners association is stubborn, I know it's president and they opposed anything that adds to local congestion, so I know it's a lost cause.

I was sort of in shock but I’m glad I held out and was stubborn.

When its a proforma which appears to be what you are looking at the price is usually flexible unless its in a hot area or the seller is stubborn with the asking price and has no actuals.On the other hand you will see seller provide actuals and are firm with the asking price or have some flexibility. 

You look to data, numbers, and from those you develop equations and then you build your spaceship and blast off.Math is absolute truth, .. there is a reason the saying "numbers don't lie" exist.The reason why I am successful is because I dropped the ego, dropped the stubbornness, dropped emotion, pride... and I looked towards numbers data analysis.

If you did, and the seller accepted it while paying the 6% commission, it sounds like you just lost a deal because you were being stubborn.

My mom says i can be stubborn.

But sometimes people are stubborn and fell insulted, if thats the case, give the seller your card and tell them if they change there mind to call you.. then just walk away... there are plenty of other fish in the sea

Many people would get stubborn and try to justify their previous deals etc.

I've always wondered about his system but I'm stubborn and would rather spend the money on a deal.

They're usually at the technological level of a hammer and just as stubborn.