They go for around €100 but I found mine on sale for €59 - another reason to buy. The coffee pads come in a box of 12 in five available flavours from espresso to decaf - the pads are individually wrapped in foil which makes the coffee so much better than the Senseo I used to have where only the first 3 or 4 pads in the 16-pack tasted fresh. The cost for the pads is an average of 17 cents a cup. (that's Euro-cents, if you're keeping score)
I would have rather bought a real espresso machine like this one:
- but they start at about €399 - oh well, one day...
