Considering the Ac Los Vascos in Madrid?
A VT member wrote the following comment about visiting Madrid:
Hola Latina Phone Card is Great !! by Frisbeeace
Hola Latina phone card is incredibly cheap. I had used it last year while visiting Italy and this time it worked even better. I bought a 6 euro card and had 240 minutes to phone home in Argentina. After 10 days in Spain and several phone calls I still had more than a spare hour in it as I was taking my plane back.
You can find it at drugstores, tabaquerias and even at locutorios.