Can still be used to play online just fine though.) But they probably registered it on their account previously, so the key is 'claimed' now. Also Selling bnet accounts is riskier than selling keys.) Never opened, still in original packaging.) From pristine, boxed copies of WarCraft III. But a Good key is still perfectly suitable.)
(I probably can't give you a perfect key, obviously. I have lots of keys, so you get to pick the type. Donation of 8€ arrived, I'll email you the keys as soon as I verify for you that they're working as expected.