Spain Money Saving Tips and Offers

Coca Cola are currently running an "anti-crisis" promotion in Spain at the moment.  The 2 litre bottles of Coke and Diet Coke now come with 250ml extra free.  They have basically removed the curves from the top of the bottle, giving the 250ml extra. 

I don't normally buy Coca Cola products.  The supermarket own brand stuff is usually fine for me.  I did however fall for this promotion last week and got a couple of bottles.  I think I paid 1.38€ per bottle.  It seems like a good deal but I'm not sure how long the offer will run for.  Maybe a good time to stock up?

I have also noticed that Lanjaron mineral water is offering 30% extra free on their large bottles.  So there seems to be some good deals on branded products at the moment.