Hear hear! Argentina has been finally blessed again with maple syrup. Still, finding maple syrup in Buenos Aires is still an expensive treat.
I went to Armenia (Av. Raúl Scalabrini Ortíz 1317) and there was a classic flask of Canadian maple syrup for sale (250 ARS, 11 USD to date). Apparently this is the size of a maple leave, I read! The picture is just to give you an idea of the bottle size, I am too shy to snap pictures in stores! Anyway, it had a Canadian flag on the bottle, in the top left corner.
There are some alternatives on ML. I had never seen a can of Maple syrup, but you can find the 540ml can for 1600 ARS on ML.