As a visitor in Argentina you will at some point see tons of flyers with info on tango shows for as high as $100 USD per ticket. This offer usually includes a shuttle bus from your hotel with a dinner included. It can make for a fancy night with your date (if you have one).
If you’re more into the local scene, then you will be more likely to want to see the hardcore dancers after midnight in dance clubs and tango bars. While this is the more affordable option, it also means staying up all night and the possibility of being reeled in to dance. People eat dinner late and get their party on well after 11 pm. We opted for affordable show, which was held at Centro Cultural Borges. Be sure to check for show times because it does not happen every day.
In Buenos Aires, like all major cities, you will stumble upon free activities in public areas. While wandering the streets we stumbled upon a bit of a tango show and the professionals stopped for us to take perfect photos of their perfect poses.