390 - £250-£300
390X - £350-£400
NVidia will counter with huge price drops so I think much over £400 is out of the question given AMD's position.
If Nvidia do that i hope AMD don't go silly low price to counter it.
Absolutely no point in selling for low margins or even a loss, Nvidia can do that if they want, see how long they are willing to do it before jacking the price up again.