Per my previous comment. Suckers are a subspecies of human that have secured more money than they have sense. They spend it frivolously without regard to what it does to the blue collar hard working man and they have little insight on what the value of a dollar really is. These people have an inability to make conscious decisions with respect to their neighbor, rather with their own material interests in mind.
I refuse to be part of a transaction, whether it be on the receiving end or not, that will sacrifice the wellbeing of someone's future financial self, or offspring, in order to supply my own self with more than I can currently manage. If you desire to live in a capitalist society, have the responsibility to keep it under control. There is profit, and then there is gouging. All it takes is being informed, and giving a damn about getting screwed. It's not hard.
When a dealer lies to you to justify their markup because of the "market", you just tell them "I AM THE MARKET". Stand firm in your resolve. They didn't pay a markup, and neither should you.