It is now $379 - 10% off with coupon code C8MT7GZJ
with free shipping.
Target has the LEGO Star Wars Death Star (10188) for $379 - $7 off with this link
(click first) = $372
with free shipping. Normally $400 if you can find it. Contains 3803 pieces, 8+ pivotal scene rooms, and 24 minifigures, droids, and the Dianoga trash compactor monster