You can repeatedly sign up for the Subscribe and Save feature with Free two day shipping and cancel at any time without repercussions. You subscriptions remain the same price, so if you find an excellent deal, even after you have canceled the subscription, it will be that price when you renew it.
Use the "Check out Your Coupons" feature once you've selected an item it will be further down the page.
The Subscribe and Save discount applies to Amazon sales only.
Type in Subscribe and Save in the search bar if you don't see it at the top.
Amazon will show you different styles like Swaddlers or Baby Dry and there is a bar that says, More options available. Sometimes the sizes in the drop down are cheaper than the size shown.
If you receive Parents magazine, the sometimes have Amazon coupons for 20% off one order of Diapers. The codes are unique, but stack with Subscribe and Save.
Amazon also applied a Free Amazon Prime Membership preview to my account. So, if you're lucky, they'll do this for you to! This means free 2 day shipping and returns.
Don't forget with Swagbucks you could be earning $5 Amazon gift cards to go with your 15% off with Subscribe and Save after the extra 15% off on diaper care items.