How much has Trump spend on his campaign so far? I bet its tiny
Other than jet fuel and some additional staff? Probably not a lot, by his standards. He gets at least $10 or 20 million dollars of free publicity a day and I might be low on that. Why buy ads at this point? Most world leaders other than Mr. Obama would love to have his visibility.
I fail to see the value of putting all your eggs in Iowa. It seldom picks the winner, and in fact, the candidate gets mired in these liberal debates. Even Trump stated that he was supportive of Ethanol.