10 Costco Bestsellers Cheaper on Amazon: Save Big on High-Demand Items Online
- Manny A
- Aug 30, 2025
- 3 min read
Costco is renowned for its bulk deals and high-quality products that attract millions of shoppers each year. However, savvy buyers know that some of these popular items can be found at even lower prices on Amazon, especially during sales or with bundle options. Below is a list of 10 high-selling products across both platforms—ranging from household essentials to electronics—that are currently cheaper on Amazon. 🛒✨ These items are favorites among shoppers for their reliability, value, and everyday utility. For each, I've included a brief review highlighting why it's popular, along with an Amazon purchase link.
Dawn Powerwash Gain Original Dish Spray
This innovative dish spray is a bestseller for its no-scrub formula that cuts through grease and stuck-on food effortlessly, making kitchen cleanup quick and efficient—perfect for busy households. 🧽✨ Shoppers love the fresh scent and the convenience of the starter kit plus refills, totaling 64 ounces. It's a high-selling item on both Costco and Amazon due to its effectiveness on tough stains.
Amazon Basics Basket Coffee Filters for 8-12 Cup Coffee Makers
These filters are a staple for coffee enthusiasts ☕, holding enough grounds for up to 12 cups while keeping your machine clean and preventing bitter residue. They're popular among daily brewers for their affordability and compatibility with standard machines, selling in high volumes on both platforms as an essential morning routine item.
TeeLux 100-Count Green Tea Bags
Organic and individually wrapped, this green tea 🍵 is favored by health-conscious shoppers for its antioxidant benefits and soothing flavor, often used for daily wellness routines. It's a top seller in the tea category on Costco and Amazon, especially with a 15% discount making it an economical choice for bulk tea drinkers.
40 PCS Food Storage Containers with Lids
Made from durable glass with airtight lids, this set offers various sizes ideal for meal prepping 🍱, storing leftovers, or organizing sauces and sides. It's highly popular among families and home cooks for its microwave-safe design and leak-proof features, driving strong sales on both sites as a kitchen organization must-have.
Amazon Basics 300-Count Sandwich Storage Bags
Versatile and compact (6.5 x 5.9 inches), these bags are perfect for snacks 🥨, cereal, or sandwiches, easily slipping into lunch bags or purses. Shoppers rave about their durability and value, making them a high-volume seller for everyday use in households and offices on Costco and Amazon alike.
GoodCook Nonstick Steel 3-Piece Cookie Sheet Set
This baking set is a go-to for home bakers 🍪, featuring nonstick surfaces that prevent sticking and make cleanup easy, replacing worn-out pans effectively. It's popular for its sturdy construction and even heat distribution, with high sales driven by baking trends on both platforms.
24-Count Kitchen Cleaning Sponges
With a soft yellow side for gentle wiping and a coarse green side for scrubbing tough spots, these sponges are essential for kitchen maintenance 🏡. They're a bestseller among cleaning enthusiasts for their absorbency and longevity, seeing strong demand on Costco and Amazon for household chores.
Amazon Basics Tall Kitchen Drawstring Trash Bags
This 200-count pack of 13-gallon bags features a subtle scent and strong drawstrings for easy tying and carrying. 🗑️ Popular for their reliability in busy kitchens, they sell in high quantities on both sites as a staple for waste management without overwhelming odors.
64 Count Dry Sweeping Cloths
Compatible with sweepers like Swiffer, these cloths trap dust and hair effectively for quick floor cleaning without water. 🧹 They're favored by homeowners for their convenience and bulk value, making them a high-selling cleaning accessory on Costco and Amazon.
Amazon Basics 40-Pack AA Alkaline Industrial Batteries
These long-lasting AA batteries 🔋 power everything from remotes to toys, offering reliable energy at a fraction of name-brand costs. As a top electronics essential, they're hugely popular among shoppers for bulk needs, with massive sales volumes on both platforms due to everyday device usage.
✅ Conclusion
While Costco remains a favorite for bulk savings and in-person shopping experiences, Amazon often edges out with better deals, fast shipping, and bundle options. 📦💨 By comparing prices before you shop, you can maximize savings on everyday essentials—whether it’s powering your devices, brewing your morning coffee, or keeping your kitchen stocked.
👉 Bottom line: If you’re already shopping at Costco, double-check Amazon—you might save even more! 💰🔥
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