We have opened a pre-order bundle on Warehouse 23. One of each starter, twelve boosters, and a holiday greeting card (that will be mailed before the game ships).
http://www.warehouse23.com/products/...eorder-special
Additionally, you can use this pre-order form to pre-order the game at your favorite local game store:
http://munchkinccg.game/site-ccg/ass...eorderform.pdf