I don't know why it's $110, it probably has some DLC or is some sort of Special Edition or something... but if you do $110 + 20% then it's actually $132 :P and as far as I can see it seems like new releases like DmC or Dead Space are $89.99 (or $108 with the 20% of taxes).

It's been said here some time ago that all credit card international transactions will be added a 20% of taxes and in the "Welcome" (or "Bienvenido") screen I posted (first pic) there's a disclaimer saying that all transactions made with a credit card will be computed as an international transaction and that banks can make you pay taxes for that... and we all know here that the taxes it's talking about is that 20% and that we WILL have to pay it :P

And look at the fourth screen, the middle square of the third row... it says Angry Birds: Trilogy (Full Game... or "Juego Completo") is $53.99... The Angry Birds: Trilogy in the third pic that costs $5.99 isn't the full game, it's a DLC (or "complemento" like it says there)

Great stuff for you guys! Don't worry about the prices that much. They are sick, but I remember when MS has finally launched Live in Poland in November 2010 and the yearly subscription cost $90. Some time later they dropped the price to far more reasonable $40. Hope it's going to be the same for you :)