I'm a big fan of BeautyCrunch.com- it's primarily an authorized reseller that offers overrun and discontinued (but still very good) artistry brand beauty products. This site literally has prices that seem too good to be true.

I have ordered from this site once before, and the experience was great. My order came in about a week and my makeup was excellent. The site mainly carries Stila, DuWop, Too Faced, and Pop Beauty, Sugar and Pixi. Check it out for yourself. It's  a cheaper way to treat yourself to something pretty and new :)