From their announcement:
With Christmas around the corner, it is time for our Annual Christmas Sale! As you know, we only have two sales a year, and we like to make them big! So, from now until December 31st, everything on the site is 20% off! Yes, you heard right, 20% off! Use code rebel2011 when checking out to get the discount!
Note: Every year, we start selling out of packs quickly. This usually has some customers upset that they have missed out. So, this year, we will keep all of the packs available in the store. We will ship out what we have in stock, and "back order" the items we do not have in stock. Once we get these back order packs in, we will ship them out. That way, everyone can take advantage of the sale!