This Star Wars Coffee Mug listed at $12.99, but you can get it for $3.99 during this clearance event at ThinkGeek. Even with a $5.95 shipping fee, which is free on orders over $75, that's the best price we can find anywhere. The image on the mug depicts the Death Star's laser at the moment it strikes Alderaan, and the image changes with heat. Looking for more nerdy deals? There are more clearance items on sale too. Sales tax is charged in most states.