Amazon just keeps rolling out the diaper deals! Here's another pretty decent one.
Amazon has size 3 Baby Dry Diapers, 144 ct for $19.92 when you subscribe & save and "clip" the $1 coupon on the page. That comes out to $0.138/diaper, which is pretty decent.
I usually aim for $0.12/diaper, but I love Pampers so I'll spend a little more for them on occasion! Plus it's nice to get such a large quantity at a great price, rather than picking up a jumbo pack here and there, because you'd have to get around 5 jumbo packs at a decent price to equal one of these big boxes!