I don't read Clarin. My father-in-law does and let us have the 365 Plus. Good deal for us, but I am not sure for him because I think Clarin subscriptions are relatively expensive (if your purpose is to get the card).
And year, Supermarket deals are the best ones. Carrefour 15% on Wednesdays is another (different days for Express and Market locations). Although, I am not sure if its still available in Carrefour. It is in Disco and Vea thought. 2X1 on cinemas is another good one (Hoyts Cinemark). Then a whole bunch of places to eat and stores.