Come on, man... are you that intellectually lazy? You would walk into an economics class trying to convince them that Karl Marx was for free market capitalism based on that? In that entire text he rants about how much he hates free trade and the people that support it... over and over and over again... and in one quote throws in a tounge-in-cheek rhetorical device saying he would support it over the current system only because he knew that the people of that day were too dumb to understand it, thereby making it easier for his side to win them over with their class warfare demagoguery. But, no... Willie Green found you one little quote that you read which appears to say Karl Marx was a free marketeer, unbeknownst to every student of economics the world has ever heard from. Amazing.
As far as Marx is concerned, I wouldn't categorize his quotes as being tongue-in-cheek. He was all about the destruction of the west. He would do anything to hasten it.