I saw them in Corte Inglés today, but I didn't look at their prices. I am not particularly interested, but I can do some research, I heard they were a bit overpriced.
I bought one today, they are fun!!! you fed them and brush them, and in their house, once you find it, you can let it go poo and clean it up, and there are so many games to play, and if you want it on "pause" find a bed and make it sleep, it makes it look like it turned off, but never fear!
I have 2!! A puppy and a hamster. You touch charms to their ports to feed and brush them, press the 'Play Button' to play with them, they don't evolve, but there's other stuff: