comment on business ethics

I believe that what the two people did to buy and sell the land was unethical; however, very clever and they deserve to keep the money. We live in a free market economy, every man for themself. They did what they have to do to survive, and that's make money. The lady that sold it for a measly 450,000 should have been more careful with the actual value of the land, so shes at fault. The two people saw an opportunity of a life time, so they took it, and that's the way it's supposed to be in America.