500 would be minimum, otherwise they would have to sell 5870's for less than 250, i dont think they would drop that fast surely?
Why? It has always been the case that the x2 variant is cheaper than buying two individual cards. After all, they only require a single PCB, a single set of packaging etc...
Also, that 677 euro price was put up in January, according to the bods at XS forums, so can't be representative of anything. I wouldn't read anything into it. I would be very surprised if the price was set at anything other than $599 (which would be around £450 ish given conversion, VAT and import costs).