As I've mentioned, Thanksgiving is basically the international symbol of "the holiday season has begun" and that means pretty much everyone's having their holiday sales either now or starting soon. One that's going on now is the one happening at Najewitz Modellbau.
This one's pretty straight-forward. Everything's 20% off. All you have to do is use the code XMASSPECIAL during checkout and they'll whack 1/5 of the price off your order. Handy!