Walmart offers the Pampers Swaddlers Size 4 Diapers 144-Count Box bundled with a $10 Walmart Gift Card for $41.99. Opt for in-store pickup to dodge the $5.99 shipping charge. Assuming you use the gift card, that's $8 under the lowest price we could find for a 132-count box. These diapers fit toddlers weighing 22 to 37 lbs.