14 Under the Radar Costco Items Smart Shoppers Obsess Over

Shoppers in the know have the best Costco hacks for finding the warehouse club's top deals. And if you check out the retailer's review section or the store's subreddit, you'll find a supersized selection of "sleeper" products that loyal customers swear by.

From French toast bagels to frozen tortilla-crusted tilapia, we scoured the internet to find amazing deals more Costco shoppers need to know about and start adding to their carts.

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

Price: $15.99

Pass on pricey restaurant meals and make your own savory tortilla-crusted seafood selection at home. Each serving in this two-pound box has 17 grams of protein. And bonus, the artificial flavor-free fish is farmed responsibly.

Reddit user Cool_Butterscotch_88 called this freezer section find, "One of the best breaded frozen fish in the club."

Price: $7.99 for two packs

While everyone is clamoring for everything bagels, these sweet treasures often go overlooked.

But not on Reddit. User SparkyBrown recently noticed the bargain bagel buy, "Don't know how long these French toast bagels have been available, but I just picked some up last week. They're pretty awesome.

Right now, you can get two six-count packs for $7.99. If you want to try another variety, Costco has a mix-and-match deal.

Price: $169.99

Dick's Sporting Goods and speciality online retailers aren't the only places to snag a set of golf clubs. Costco's store-brand line includes this three-piece wedge set. For $169.99, you'll get a right-handed gap wedge, sand wedge, and lob wedge.

A single MyMG4 Wedge from TaylorMade costs over $229 on the brand's website. If you're new to the game, Costco's KD deal is priced just right (as shopper Mike points out in the retailer's review section), "Love these clubs, good quality, play well. I'm a beginner."

Price: $11.99 per pound

If fresh Atlantic salmon, pesto, fresh dill, and butter sounds like a gourmet find from a fancy restaurant, think again. This sleeper is a Kirkland Signature Costco prepared ready-to-cook product.

How do shoppers feel about this fish? According to Reddit user europeanperson it's a, "Great choice. One of the few premade options I've bought more than one."

Price: $13.99

You expect to find doggie duds at stores like Petco and PetSmart. But now you can nab a lux logo hoodie for your canine companion at Costco. Compare $24.99 for Petco's Reddy Best Friend Ever Hoodie for Dogs to $13.99 for the KS deal.

Shoppers rave about this pet product. Redditor Never-Dont-Give-Up recently revealed that their pups are, "Very happy with their new wares."

Price: $6.99

Snack smarter with this deal. Even though the French toast bites look like a sweet treat, these mini rice cakes have an unexpected healthy surprise inside — a blend of chia, quinoa, and flax.

But that's not the only reason to try this sleeper. Each 21-piece serving only has 90 calories. These minis aren't just nutritious, they're also delicious.

Reddit user NexxyL1973 posted, "I almost walked by these because I wasn't sure of the combo rice cake and French toast. Glad I bought them, they are really good.

Price: $99.99 (on sale from $129.99)

With a True HEPA filter that captures up to 99.9% of airborne allergens, this purifier is an easy way to keep your home clean and pollutant-free.

Get up to two years of filtration with the all-in-one filters. Other features include a real-time air quality display, auto mode, and WiFi compatibility. Costco subredditor Christovir recently wrote, "They have made a great improvement in the air quality from dust and dander. Would totally buy them again."

Price: $8.89

Gourmet goat cheese doesn't have to break the bank. A two-count of 10.5-ounce logs is under $9 at Costco. A single 10-ounce pack from Whole Foods Market's 365 brand costs $9.49.

Costco Reddit user bobert_drake gave the KS generic a glowing review, "Could eat pounds of this stuff. That is all."

Price: $6.79

You aren't alone if you can't recall spotting this Kirkland frozen food. The crispy fries are a new instant fan favorite. Shopper tootsieroll19 posted on Reddit recently, "I'm now eating Costco fries almost every day. I think I need to stop."

Price: $16.99

Costco customers who already enjoy the KS pizzas need to nab this three-pack from Roncadin. The retailer's subreddit is filled with praise for these meat and mushroom pies. User clamscasinostix posted, "I would say it's on par with a great brick oven pizza."

Price: $23.99

Costco's famed tuxedo cakes are classics. But now there's a new sleeper contender. The tiramisu cheesecake is rich, creamy, and has a coffee flavor everyone seems to savor.

Redditor Mysterious_Case9576 commented, "Got one Friday and my wife and mother-in-law haven't let me near it. Definitely a hit in my household."

Price: $10.99

This pantry pick is a staple selection that shoppers applaud. If you've skipped over the basic buys at Costco, take it from Reddit user sjd208, "The organic sugar is a great bargain." Get 10 pounds for $10.99. BJ's sells the same size bag from Wellsley Farms for $17.99.

Price: $14.99

As one of the newer products to hit store shelves, this 264-bag pack is an unexpected bargain. TheOriginalSpark told other Redditors, "They are great, a couple dollars cheaper than the "other" ones, will not go back to the main brand.

Price: $19.99

Warehouse club shoppers have put this new-ish sleeper product into the spotlight online. The travel-ready charcuterie platter is, as Redditor stevemw puts it, a "Great price!"

One of the great things about a Costco membership is that there are always new items to add to your shopping cart. Plus, rotating staples is a good way to save money while trying out things.

Whether you stock up on sleepers or fill your cart with obvious everyday essentials, the top rewards credit cards make it easy to save on your next Costco haul. Earn cash back or score other perks on eligible purchases.