Today I was walking on Scalabrini Ortíz and I spotted the newly refurbished Dia supermarket (Scalabrini Ortíz 918). I had some bottles of beer from Coto so I didn't want to enter the store, but I have noticed that they have adopted the same strategy as LIDL in Europe, i.e. to sell bulk baked good that customers can take by themselves from a nice window display.
I could see very cheap bread in several formats and medialunas.
All I could read was a $2,49 sign under the fugassas, so I guess that is a per-piece price.