Cheap and greedy people at flea market

Some time ago I went for flea market to buy some stuff.I bought some documents price was cheap so I don't even negotatied with owner .Owner was so happy that I bought from him.I walked to next place then I heard arguing.The same owner was arguing with buyer who wanted to buy 100 documents for 4 zlotych ( 1 dollar) for each one .Owner wanted 12 zlotych (3 dollars) for each one .Buyer was very aggresive told him nobody will buy from him for this price.I said to this guy buy at owner price or leave him alone.Then the aggresive buyer started to throw insults at me.Security guy came there and told buyer to calm down or he will call the police.Then this guy backed down and walked away.This story proves when you go somewhere like flea market seller gives you good "affordable" price you don't negotiate for like cheap ass punk ,just accept the price and be happy.Fuck these greedy assholes!