I know someone already mentioned that you can do it through Sephora with a $30 online purchase or in participating stores. If you don't have a Sephora or don't want to spend $50 to get free shipping there, Origins is running the same program on their site with a $30 purchase that will also qualify for free shipping at the $30 amount. They also offer an additional free sample and have 12% cash back on Ebates today if you shop through the Ebates link.
For Origins the code EARTH will get you the Starting Over moisturizer and the code DAY will get you A Perfect World.
I got the Brightening Musts set for $37 with a full size Vita Zing, a small size Modern Friction, and Gin Zing eye cream. I also really like their Make a Difference Hand Treatment which you could get the deal by adding another small product. Happy Earth Day and Happy Shopping!