I'll agree that it's not top of the line anymore but I paid closer to $150 for mine and I still say it is the best $150 that I've ever spent on my computer. I'd gladly pay another $99 for a new one to run Crossfire if I ever needed more performance (I can get 60+ FPS running 1440x900 res with 4x AA that way it is now on stock settings). It's the Vapor-X edition too so it runs just a fuzz cooler and a fuzz faster than the normal 5770. 960Mhz clock and 1445Mhz memory isn't bad if you ask me.
Here's a really nice page for comparing the ATI GPU's if you're interested. The Vapor-X 5770 isn't on there but it still gives you a nice idea of how things stack up.