App Store for iPad showing wrong currency

I've got an iTunes Store Account based in Spain. On the iPhone and MAC works perfectly, but on the new iPad I see 2 currencies at same time. If I click on Top charts I see US$, however if I go to another section, the currency is in euros. I've got iTunes Match activated and the country is it correct at my account. I tried to restore the nes iPad and I've got the same problem. What can I do?