Nooooooooooooooo... I bought the Intellij IDEA 12 upgrade 3 days ago... I paid 111€ (including VAT) instead of 27€... I now it's irrational, but I'm sad.
Their dollar-euro conversion rate is pretty bad.
I wonder if I should just cancel the upgrade and buy a new license. According to the terms and conditions on the Digital River website, I have a legal "cooling off period" of two weeks.