How the hell do you allow it?
Yes, I'm frustrated.
Let me briefly explain: checked mmovo... if you choose something for X euro, and the you check it in USD, you will observe, that the amount in USD is exactly twice the amount of euro. (I mean 1 EUR = 2 USD)
The tricky part is, that even if you choose euro as currency, they will charge - via Paypal - the amount in USD, so you are scammed in a tricky way.