Amazon has the large Kindle DX on sale from November 24th until the 28th for only $259. The device has a large 9.7 inch display and normally retails for $379. The DX has free 3G included, but does not have wi-fi.
Amazon generally does not put Kindles on sale. If you have been wanting a large Kindle for reading technical manuals and PDFs, this is a great deal and I suspect that these won’t last very long.