If you’re in the market for some geeky t-shirts for a very low price, look no further than Threadless.

Starting today, December 6, 2010, all shirts on the site is on sale for only $9 each. Also, there’s a select few that are only $5 each. The sale ends tomorrow, December 7 at 10AM CST.

Threadless offers up all kinds of t-shirt designs, so many in fact that it can be daunting to navigate the site, so you might want to start with the following pages: Zombies, Monsters, Robots, and Halloween. There’s a variety of shirt types in Guys, Girlies, Kids, and Babies sizes.