I got Microcenter to price match Dell, because Dell has local stores in malls where they will sell you anything Dell in person. Last time I looked (and its what I got my 810 for), Dell was selling the 810 for $419. This way if something was initially wrong with my 810, I had a place I could return and swap it out.

Look on Dell's site to see where the closest Dell Store is compared to your Circuit City is. Go to Circuit City with the contact info for that Dell Store.