Ah, Argentina, land of contradictions.
I would recommend reading Bianca Fernet's article on the bubble about what Macri has vowed to do, and what it will take to do that.
http://www.bubblear.com/argentinas-economy-under-president-mauricio-macri/
For him to stabilize the exchange rate, and remove export taxes, he will have to cut government spending. To control inflation, he will have to quit losing a million a day on Aerolinas, and quite making the electricity bills in Recoleta cheaper than the cost of medialunas.
so- prices for many things will go UP.
Other things, may come down.
its an incredibly tangled skein, and no matter what he does, I guarantee every single one of you will be mad at him about something.
And, many will be happy about other things.
And, he may not be able to change certain things, no matter what.