I think people got spoiled with the HD4000s pricing. Just stop bringing that up. Just because you bought a 4890 for $175 doesn't mean you'll get the same performance per dollar next time around. Don't be greedy. Now that said, I am a bit disappointed about its performance. Hopefully its some kind of anomaly in drivers or something.
We expect deflation in computer hardware pricing, at least on a performance/$ standpoint. All computer hardware has historically increased in performance or decreased in price, or both.
This is why the 5 series are largely a disappointment to many. The performance boost over the 4 series is marginal, but the price increase is quite large. ATI's marketing feels the additional features of eyefinity, DX11 and lower idle power use are more important to gamers than raw performance and thusly justify the huge price premium. And that's a disconnect with the desires of some gamers (like yours truly).
I expect the coming NV products to be even worse. The GPGPU value add of their next generation is worth roughly 0 to me, but I expect it'll carry a very hefty premium over even the painfully expensive G200b cards.