It's as low as $180 shipped right now, but it's a pre-order, which may be right down your alley: AxentMicro.com, TechOnWeb, and DirectDial.com, etc. all run for under $200. If I were you, I'd wait for the DFI nF4 SLi-D/R. It might be as hihgh as $300-$350, though. If you're gonna settle for the ASUS A8N-SLI Deluxe, wait until about a week after DFI releases their board. ASUS, Gigabyte, and possibly MSI will have to drive down the prices of their nForce4 offerings to compete with DFI, because DFI's motherboard will own all others (ABIT should have a good offering for their nForce4 board too, though I have not heard so much as a peep about it). I settled for the A8N-SLI from ZipZoomFly for $199.99 with free 2nd day shipping, which is about the best price you can get from a highly reputable online seller.
I'll leave it up to you to decide what to do (obviously).
Good Luck.