Пост в Balvanera, Buenos Aires F.D., Argentina

I have scoured the internet, and I am getting a lot of conflicting info. Can some of you wonderful Argentinians and Gringos living there help me with the correct info please?! Looks like the ATM's are a scam, correct, and fees are astronomical? You can use dollars, but they must be flawless, but I only have $20's and not enough for 1-2 months. You can use your credit card, but what is the percentage fee they charge when you use it? It's from the US, so is that different too? Really could use some advice and help! Thanks a million