Ok taking this
And then this
It gives us a possible over view of things.
R9 480 4GB From $329 (it should be classed as VR capable)
R9 480x 4GB from $329+ a bit
R9 480x 8GB from $329+ a bit and a bit more for the extra memory.
R9 490 8GB under $650
R9 490x 8GB from $650
The 490's would seem to be around the right ball park price wise, whereas I would say that the 480's seem to be starting a bit high.
Of course these two leaks might not be accurate at all, but seeing as one of them is from an official AMD presentation it doesn't bode too well for that one at a least.

And then this
It gives us a possible over view of things.
R9 480 4GB From $329 (it should be classed as VR capable)
R9 480x 4GB from $329+ a bit
R9 480x 8GB from $329+ a bit and a bit more for the extra memory.
R9 490 8GB under $650
R9 490x 8GB from $650
The 490's would seem to be around the right ball park price wise, whereas I would say that the 480's seem to be starting a bit high.
Of course these two leaks might not be accurate at all, but seeing as one of them is from an official AMD presentation it doesn't bode too well for that one at a least.