Research shows diapers frequently beat Costco's Kirkland in price-per-unit, sometimes saving several dollars per bulk box.
The cheapest place to buy diapers in bulk depends on whether you prefer or store brands . For absolute lowest unit price, Walmart (Parent’s Choice) often leads at approximately $0.10 to $0.15 per diaper . However, Sam’s Club is widely cited for beating Costco on bulk unit costs for its house brand. Bulk Retailer Price Comparison (Estimated 2026) cheapest place to buy diapers in bulk
When buying in bulk, the "cost per diaper" is the only metric that matters. Prices vary by size (larger sizes cost more per unit), but the hierarchy remains consistent. Primary Value Brand Avg. Price per Unit (Size 1/2) Key Advantage Parent's Choice ~$0.10 – $0.15 Absolute lowest shelf price Sam's Club Member's Mark ~$0.12 – $0.15 Best bulk value for members Target ~$0.15 – $0.19 5% off with RedCard + Gift Card deals Costco Kirkland Signature ~$0.18 – $0.20 Premium quality (similar to Huggies) at bulk prices Amazon ~$0.14 – $0.15 Up to 20% off with Subscribe & Save Top Recommendations for Bulk Buying Business chain Research shows diapers frequently beat Costco's Kirkland in
The Subscribe & Save program offers a 15–20% discount that can bring its Mama Bear brand or even name brands like Pampers to competitive levels. However, Sam’s Club is widely cited for beating
Strategic buyers use the promotions alongside the 5% RedCard discount to reach prices as low as $0.17 per diaper for name brands. Strategies for Maximum Savings 14 Ways to Save Money on Diapers - What to Expect
Widely considered the cheapest overall for its brand, often starting at $0.10 per diaper. It is the best option for parents without a warehouse membership. Sam's Club