For Amazon Mom members, Amazon takes an extra 20% off a selection of Pampers diapers and bags free shipping when you choose Subscribe & Save. (Amazon Mom membership is free; click here to sign up.) Plus, click "Clip this coupon" on the product page to take an extra $2 off one Pampers item. Combined, that yields prices as low as $0.18/diaper and is the best discount we've seen on these diapers in recent months. (We saw a similar discount for the Baby Dry line only in October.) The applicable Pampers diaper lines, with prices after all discounts and free shipping: