That's a good price! The 465 is generally a little bit slower than the 5850, essentially splitting the difference between it and the 5830 (except when it comes to tesselation, which it handles very well). It consumes more power and runs hotter, and yeah, not quite as good as the 5850, but for the price, it's a pretty solid card to get. Either way you should be quite happy with performance.
~Jason