I could not believe this when I read it . . .
Buy any three Cricut cartridges, and get a fourth one free!
There is a little bit of a catch . . . for the free one, you have to pick Nifty Fifties, Ornamental Iron, Car Decals, 3 Birds on Parade or Jubilee. (Car Decals used to be an exclusive, and was only sold at one online store, so this would be a good way for people to get their hands on that one)