Yesterday, Raising 4 Boys wrote about Amazon's 30-day price drop guarantee, which I was only vaguely familiar with. The Raising 4 Boys post contains a helpful step-by-step guide on how to get a refund. Since I make quite a few purchases there, I was pretty happy to learn how to take advantage of the guarantee. I also remembered that the Firefox extension PriceDrop was made to take advantage of the guarantee. PriceDrop tracks Amazon's price for items you select and notifies you if the price goes down. It's just another reason to use Firefox.