I see your point and agree with you to an extent but there are certainly degrees of voluntary. A transaction at gunpoint is clearly not voluntary. But what if

I see your point and agree with you to an extent but there are certainly degrees of voluntary. A transaction at gunpoint is clearly not voluntary. But what if I take you out partying, get you loaded up on tequila shots? Can you still make a voluntary transaction? What if I know that you are cheating on your wife and hint that I won't say anything to her if you sold me your car for $100? In some sense of the word - this would be a voluntary transaction. At the same time, there's not much of a choice to be made. Last theoretical scenario - I'm a steel tycoon and a multi-billionaire and I decide to buy up all the freight companies and airlines. You can ship whatever products you want on via my transport companies - except steel. You can only ship steel you've purchased from one of my companies. Is your decision to buy my steel voluntary? A contract made under economic duress is voidable in many cases in the US, and for good reason. Voluntary isn't always as clear-cut as it seems.