Hello,
I have an extra key and I will sell it for 10 EUR. I accept only PayPal. We can use a middleman if you want but you pay for it. I can also send you a proof.
If you are interested send me a private message with your Skype.
I have already sold one key in the past. Reference - http://www.ownedcore.com/forums/mmo-...ml#post2890533 (Hearthstone Beta Key EU/US)