Amazon: 222 Size 3 Pampers Diapers $29.99 Shipped
Amazon has Pampers Baby Dry Size 3 Diapers Economy Pack Plus 222 Count on sale for $31.49 thru the Amazon Moms program. Clip the $1.50/1 Coupon found below the product to get them for $29.99 .
Not sure where to find the coupons on Amazon, read this post here.
Note: Amazons prices change quickly, so this deal may go fast.