15 Costco Deals You Should Grab in March 2026 (And a Few to Skip)

March 2026 at Costco is a wild ride of high-value gems and sneaky “convenience tax” duds. We’ve distilled the best expert advice to ensure you only fill your cart with winners. Ready to shop smarter? Let’s dive in.

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March 2026: ITEMS TO SKIP

Grilled Cheese & Tomato Soup Deli Meal — $17.99

• Description: A pre-packaged deli kit containing four sandwiches and a container of soup.

• Why to Skip: Dubbed with “Panera-inspired pricing,” it’s a poor value. You can make 10 of these at home for under $13; you’re essentially paying a massive “convenience tax” for basic bread and cheese.

Liquid I.V. Hydration Multiplier — $32.99 (30 sticks)

• Description: A popular powdered electrolyte supplement meant to be added to water.

• Why to Skip: Roughly 11g of each 16g stick is cane sugar. It lacks a robust mineral profile and relies on natural flavors rather than real fruit for its taste.

Snapdragon Pho Bowls —$13.59 ($4.40 OFF was $17.99)

• Description: Instant Pho bowls located in the dry goods section.

• Why to Skip: These have been called out for “insane” sodium levels and a lead exposure warning on the package. The flavor is often described as disappointing compared to authentic Pho.

Spring Truffle Assortment (Decorative Tin) — $9.99

• Description: A seasonal assortment of chocolates housed in a colorful, collectible tin.

• Why to Skip: The consensus is to “buy for the tin, skip for the chocolate.” The truffles use oil instead of cocoa butter, resulting in a waxy texture that doesn’t live up to premium chocolate standards.

Under-the-Desk Treadmill / Walking Pad — $424.99

• Description: A compact, flat treadmill designed for use while working at a standing desk.

• Why to Skip: Concerns regarding durability under heavy use make this a risky buy. The floor demo units often look prematurely worn, suggesting you should wait for a more robust model or a steeper discount.

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March 2026: ITEMS TO BUY

Hazelnut-Filled Beignets — $9.99

• Description: A breakout star in the bakery/frozen section featuring a rich hazelnut filling.

• Why to Buy: Fans consider these a must-buy.

• Pro-Tip: Air fry them for a few minutes to get that “fresh from the bakery” texture.

Ninja Crispy Air Fryer — $137.99 ($35 off)

• Description: A non-toxic air fryer constructed from metal, ceramic, and glass.

• Why to Buy: Unlike most competitors, this model contains no Teflon or “forever chemicals.” This is a record-low price for a high-quality, clean-cooking appliance.

Chosen Foods Avocado Oil Mayo (32 oz) — $6.79 ($3 off)

• Description: A clean mayonnaise made with anti-inflammatory avocado oil and non-GMO eggs.

• Why to Buy: It’s glyphosate-free and avoids the inflammatory soybean oils found in standard brands. At this price, it’s significantly cheaper than any other retailer.

Woozoo Adjustable Pedestal Fan — $79.99

• Description: A height-adjustable version of the viral Woozoo fan.

• Why to Buy: It is extremely quiet yet powerful.

• Fan Wisdom: The “dark mode” allows you to turn off control LEDs, making it a dream for sleepers who need total darkness.

Orgain Grass-Fed Collagen — $27.23 ($6 off tub)

• Description: A grass-fed collagen peptide supplement that includes probiotics.

• Why to Buy: It is unflavored and dissolves easily in coffee or tea, serving as an easy “bio-hack” for hair, skin, nails, and joints.

Winix Air Purifier — $99.99 ($30 off)

• Description: A HEPA filtration system designed to capture 100% of viruses, bacteria, and mold.

• Why to Buy: HEPA filtration is the gold standard for home air quality, and finding a verified unit for under $100 is a rare value.

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  Tried, Tasted, and Rated: Trader Joe’s Finds This Week

Perfect Bar (12-pack) — $14.00 ($6 off)

• Description: An organic protein bar sweetened with honey and featuring protein from dried eggs and rice.

• Why to Buy: They recently swapped sunflower oil for olive oil, making them a much “cleaner” grab-and-go option, even if they are a bit higher in carbs.

Battery Backup Emergency Light Bulbs — $18.99 (2-Pack)

• Description: Internal-battery-powered bulbs that stay lit during power outages.

• Why to Buy: They are a literal lifesaver for “peace of mind.” They function like normal bulbs until the grid goes down, then provide hours of emergency light.

Pura Vida Frozen Vegetables (4 lb) — $10.00.20 ($3.50 off)

• Description: Fire-roasted vegetables seasoned with Himalayan salt and cooked in avocado oil.

• Why to Buy: These avoid the seed oils found in most frozen prepared sides. They are nutrient-dense and offer a “fire-roasted” flavor that’s hard to replicate with raw ingredients.

Ninja Deluxe Kitchen System — $152.99 ($40 off)

• Description: A powerful 3-in-1 system including a blender, food processor, and “to-go” cups.

• Why to Buy: This is an incredible “all-in-one” value for a major kitchen upgrade, especially given the various attachments included.

Acacia Wood Organizer Trays / Stoneware Baskets — $24.97

• Description: Aesthetic storage solutions for home organization.

• Why to Buy: These are high-end materials that look significantly more expensive than their price tag.

• Note: Keep an eye out for prices ending in “.97,” as some have seen these drop as low as $10.

Immune Support Shots (10-pack) — $10.49

• Description: Functional shots with pineapple, ginger, turmeric, and acerola cherries.

• Why to Buy: High in Vitamin C (70% DV) and low in sugar (4g). The addition of black pepper helps activate the anti-inflammatory turmeric.

Milton’s Cauliflower Crust Pizza (2-pack) — $9.99

• Description: Frozen pizza with a vegetable-forward crust and minimal added sugar.

• Why to Buy: While the cheese isn’t organic, the ingredient list is far superior to standard frozen pizzas, with no artificial fillers or preservatives.

Polywood All-Weather Side Table — $189.99

• Description: Heavy-duty outdoor furniture made from recycled plastic.

• Why to Buy: It won’t rot, peel, or ever need staining. It’s a “buy it once” item that withstands harsh weather for years.

Blueland Dishwashing Tablets — $49.99 $10 off

• Description: Plastic-free, non-toxic, and EWG-verified detergent tablets.

• Why to Buy: They are plant and mineral-based. The unscented version is highly recommended to avoid synthetic fragrances on your dishes.

FoodSaver Vacuum Sealer — $149.99

• Description: A machine for sealing meats, fish, and dry goods for long-term storage.

• Why to Buy: It prevents freezer burn and keeps pantry items like nuts from going rancid, eventually paying for itself by reducing food waste.

GreenPan 11-Piece Cookware Set — $179.99 ($50 OFF was $229.99)

• Description: Ceramic-coated non-stick cookware.

• Why to Buy: A healthy alternative for those wanting to ditch traditional Teflon-coated pans for a non-toxic ceramic surface.

Guinness Battered Fish Strips — $12.69

• Description: Pollock strips featuring a savory beer batter.

• Why to Buy (With Caution): This is a polarizing item. If you love savory, beer-battered fish, it’s a win—but use an air fryer to ensure they don’t turn out “tasteless” or soggy.