Never take a cab in Buenos Aires! Simple as that, never do it niggah. I just spent 13 hours on a plane from Sydney after pulling an all-nighter in my last day in Auckland and arrived on a new continent with a new language, so it's safe to say, I was a bit groggy.
All concept of time and days disappeared somewhere between skipping one nights sleep and instead going to bed at 3 pm, and sitting on a plane for 13 hours and still only move 1 hour forward in time... So when I make it through the airport in Buenos Aires, after many, loud south Americans "discussing" with the custom what they can and can't bring in, I try looking a bit for a bus to take me in to town where I'm supposed to follow half an A4 of directions to find my hostel. After a few confused minutes, I find a cab driver who shows me where I can find an ATM and offers to take me straight to the hostel for 180. Ok, a bit more than I hoped for but 180 pesos would mean about... 300 kr. I feel that'd be alright, just so I don't have to traverse the streets of Buenos Aires at night, with no sense of direction, a phone that is dead and a stomach that is screaming. It's a long ride, but the driver is cool, speaks some English, willing to help me with my spanish.
When we eventually see my hostel and he pulls over, I start counting up 200 pesos when he says "870 pesos, gracias"...
Waaaaait a minute.... Apparently he meant it would be 180 US dollars, not Argentinian pesos... So instead of 300 SEK, it ends up nearer 1300 SEK for a cab ride. In a country where I can basically find a dorm-bed for 300 SEK for a week... Baaaaaaad.
I'll have to stay f***ing cheap for a while now, but for what it's worth, living expenses aren't even close to those in NZ or Oz.
So to summarize, NEVER take a cab in Buenos Aires. I had heard some people saying I should watch out when taking a cab, which is why I was sure to ask for a price and to see his license and all beforehand, but damn...