Milk price has to do with the availability of cows- For example, here in MI, which is filled with dairy and meat cows, milk and meat are still pretty resonable. Go to Hawaii, however, and you could pay 2-3x for the same thing. Mostly, the inflation of costs deals directly with the prices they have to pay to import/export the product, the grain and upkeep for the cows, etc.

In this case, it's not just dairy, though. Tornado's in Madagascar virtually wiped out the vanilla crop, which is where a rather large chunk of the ice cream industry gets it from. That right there made the vanilla cost jump astronomically.

The gas prices, obviously, have risen. That means transport of the supplies and end product all cost more.

Cocoa on the Ivory Coast went up as well, because of the political unrest.

All of that means a jump in the over all price.

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