I have a 9800NP and love it, but I don't think I'd pay $150 for it today.
I bought it for $200 about a year ago and it was a BBA (longer warranty) and came with Half-Life 2 coupon. This one is only "Powered by ATi", so 1 year warranty, and only Black Hawk down bundled.
It's not a BAD deal by any means, but nothing outstanding either. Today, I'd wait for NVidia 6600 deals to appear.
Oh and those cards rarely clock to XT levels and are stable. Mine does 390/320, which is decent but far from the XT. Don't bank on overclocking, it's never guaranteed.