Have you ever heard of Amazon Mom? You can sign up here, but basically it's for all moms or dads or grandmas, etc. It doesn't cost a thing, but it provides its' members with free 2-day shipping for 3 months, and for every $25 you spend, you'll get an additional month of free shipping. Read all about it here. (Free shipping on anything, not just diapers and stuff).
Free shipping is pretty great, but the really awesome thing about Amazon Mom is that you can sign up for "subscribe and save". Which is where you sign up to have diapers or wipes or other such things sent to you automatically. I just signed up to have 2 boxes of diapers shipped to my house each month. The good thing about subscibe and save is that it saves you 30% on top of the already good amazon prices. And of course, you don't have to go to the store and all of that junk. My diapers (Huggies Little Movers, size 3, 76 count) cost 17 cents a piece, which isn't as great as an awesome coupon/sale deal, but it's much better than Costco's price of 25 cents a piece and Wal-mart's price of 27 cents a piece.
I just wanted to let all of you other moms know about this good deal on diapers, wipes, and other items you most likely fork over a ton of money for each month. No, Amazon did not compensate me for this post, but they should have.