10 Random (But Useful) Costco Kirkland Deals Under $20 This Month

September quietly rewrites your Costco list. The grilling stuff gets marked down, soup ingredients come back into rotation, and you suddenly need a layer for the morning that you didn't need three weeks ago.

Kirkland Signature is where that shift stays affordable, and leaning on it is one of the simplest ways to save money at Costco without downgrading anything.

Our roundup skips the pantry greatest hits everyone already owns. Instead, we hunted for the odd and useful: breakfast granola at 30 cents an ounce, organic chicken stock at $2 a carton, and a full-zip jacket for $9.97. That last one carries a marked-down price tag, which at Costco usually means the remaining sizes are all there will be.

Editor's note: Prices and availability are subject to change and may vary by location.

Price: $9.97

We're leading with this because a full-zip jacket for under $10 is the single best price on the list. Ottoman knit is the right call for September: the ribbed texture gives it structure, so it holds its shape instead of going shapeless after a few washes.

Costco shoppers have long read prices ending in .97 as a marked-down item, which typically means what's on the rack is what's left. It carries a 4.3-star rating across 74 reviews, a smaller pool than most Kirkland apparel, which usually points to a newer arrival.

Layer it over a tee for school pickup, a chilly morning walk, or the stretch of evening when the porch gets cold.

Price: $10.49

Breakfast gets rushed once school is back in session, which is exactly when a good granola earns its shelf space. This one is certified organic and built on ancient grains, and shoppers rate it 4.8 stars across 2,760 reviews, a lot of goodwill for a cereal-aisle item. The bag holds 35.3 ounces, so you're paying roughly 30 cents an ounce for organic, a number most grocery store granolas can't touch.

Use it three ways, and it stops being a single-purpose purchase: over yogurt, in a bowl with cold milk, or by the handful as a mid-afternoon snack that isn't candy.

Price: $11.99

This is the highest-volume favorite in our roundup, at 4.8 stars from 4,753 reviews, and if you cook dinner regularly, it's the first thing we'd put in your cart.

Six 32-ounce cartons work out to an even $2 per carton for certified organic stock, and anyone who has priced organic broth at a regular supermarket knows that's hard to match.

Stock is the backbone of autumn cooking: soups, chili, braises, pan gravy, or a pot of rice that actually tastes like something. Because the cartons are shelf-stable, buying all six now and working through them across September and October costs you nothing in waste.

Price: $12.99

At 4.8 stars across 941 reviews, this is the highest-rated product we came across anywhere in the Kirkland lineup, and it's the sleeper pick of the bunch.

Sweet heat means exactly what it sounds like: a sugar-and-spice profile that hits sweet first and warm second, which is why people describe it as hard to stop eating.

The 24-ounce tub runs about 54 cents an ounce and does real work as a lunchbox add-in, a road-trip bag, or the bowl you set out when football is on. Portion it into small containers when you get home, because the tub disappears faster than you'd expect.

Price: $12.99

Lunch is where quinoa quietly saves you money, because a big batch cooked on Sunday becomes five weekday meals. This bag is 4.5 pounds of certified organic quinoa for $12.99, or about $2.89 a pound, and it holds a 4.8-star rating across 1,945 reviews.

Cooked quinoa keeps in the fridge for days, so you can build grain bowls off it all week: roasted vegetables one day, leftover chicken the next, a handful of pecans and a vinaigrette after that. It also stretches soups and stands in for rice at dinner. Dry and sealed, the bag stores for a long stretch without any fuss.

Price: $14.89

Protein you don't have to cook is worth something on a weekday, and these deliver it. Costco lists them as gluten-free, 98% fat-free, ready to eat, and extra-thick cut, sliced from whole top round with smoke flavoring added. Shoppers give them 4.6 stars across 2,287 reviews.

The extra-thick cut is the whole point: it stays tender and chewy rather than turning into the dry, brittle jerky that shreds in the bag. Toss a few strips in a lunch bag, keep some in the car for long drives, or chop them over a salad when you want dinner to happen in five minutes.

Price: $14.99

Nobody gets excited about trash bags, which is precisely why they belong in a "random but useful" list.

You get 500 clear 10-gallon liners for $14.99, roughly three cents a bag, and for most households that's a year or more of bathroom, bedroom, and office wastebaskets.

The 4.6-star rating across 3,033 reviews reflects the only thing that really matters in a small liner: it shouldn't tear when you lift a full one out.

Kirkland's household paper and plastic goods have a long-standing reputation among Costco shoppers for holding up as well as name brands, and this is a category where bulk costs you nothing but shelf space.

Price: $16.99

Merino wool is the reason this one matters. It regulates temperature and resists odor in a way cotton simply doesn't, which is why outdoor and travel brands charge a premium for it.

Four pairs for $16.99 puts you at $4.25 a pair, a fraction of what a single pair of name-brand merino crew socks typically costs.

Extra-fine refers to the fiber diameter, and it's what keeps these from feeling itchy against your skin. Shoppers rate them 4.8 stars across 473 reviews. Buy them in September, before boot weather arrives and the popular sizes get picked over.

Price: $17.99

Pecans get expensive quickly, so a 2.5-pound bag at $17.99 is worth grabbing now, about $7.20 a pound with the candied work already done for you. Shoppers give them 4.8 stars across 3,166 reviews.

These are the fall workhorses: scattered over a spinach and apple salad, folded into sweet potato casserole, chopped onto oatmeal, or just set out in a bowl when company comes.

The real money move is buying ahead of Thanksgiving, since baking-nut prices tend to climb as November gets closer. Sealed in the freezer, they'll keep their crunch straight through the holidays.

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Price: $18.99

Closing on the hidden gem and the item most likely to be new to you. These are dry disposable face towels rather than pre-moistened wipes, so you pair them with your own cleanser or cleansing oil, or simply use one to pat your face dry.

Costco lists them with no added fragrance, chemicals, or pre-moistened ingredients, and notes they're made in Korea. At 200 towels for $18.99, Costco's own listing puts the unit price at about 10 cents each.

They hold 4.5 stars across 179 reviews. If your face has been meeting a bath towel that's been hanging there since Tuesday, this is a cheap upgrade.

September pays off for shoppers who buy a step ahead of the season, and this list is built on that idea: a layer before the cold sets in, stock and pecans before holiday cooking ramps up, quinoa and granola before the weekday scramble wears you down.

The clearest values here are the $9.97 jacket, organic chicken stock at $2 a carton, and merino socks at $4.25 a pair. One caution on that jacket: a .97 price ending usually signals limited sizes and no restock, so treat it as now or never.

And however your cart shakes out, using one of the best cash back credit cards is a smart way to make your money go further.