Cards listed in a really trustworthy shop from Spain:

http://www.4frags.com/catalog/produc...tx480+-+1536mb
http://www.4frags.com/catalog/produc...x470+-+1280mbx

GTX480 : 440€
GTX470 : 330€

They say that they can't confirm the specs but the prices are 100% legit, at least for the limited units they will receive. Also, they mention that the second batch of cards will get in April, which means that by 26th there will be cards in the shops...

Like I said, this shop has an awesome reputation here in Spain, it's well known so I think it's 100% legit.