Costco Unadvertised Sales! SEPTEMBER 2021

*UPDATE* 9/18/21.
It’s time for another edition of Costco unadvertised sales! Here are some of the unadvertised deals for the month of SEPTEMBER 2021 being offered at select Costco locations, while supplies last. Some deals may be regional. I’ll update this post periodically with new sales.

I spotted these products at the Covington, Washington Costco (some were spotted at the Tukwila or Federal Way, WA locations). Some items may not be available or may not be on sale at all Costco locations. I wish Costco would just make all the sales national but sometimes they don’t. Prices may vary by location. Limited to stock on hand. When in doubt, call your local Costco before you go.

Click on ‘more info‘ to take you to the individual post that describes the product. Happy shopping!!

Products that are italicized are new on this list since the latest update.

Looking for the coupon book? Check out my post:

Costco Coupon Book SEPTEMBER 2021 (9/1/21 – 9/26/21)

SEPTEMBER 2021 COSTCO UNADVERTISED SALES



Deluxe Garden Bunch Costco

FLOWERS

  • Deluxe Garden Bunch $7.99 (exp. 9/26/21. $2 saved) Item #970125

KITCHEN

  • Cuisinart 4-Slice Toaster more info $39.99 (exp. 10/3/21. $10 saved)
  • Kohler Pro Inspired Sink Kit more info $299.99 (exp. 9/26/21. $50 saved)

MATS / RUGS / CURTAINS

  • Apache Mills Entry Mat more info $9.99 (exp. 9/30/21. $5 saved)
  • Apache Mills Half Round Scraper Mat 24×39 $9.99 (exp. 10/4/21. $3 saved) Item #1379186
  • SUN+BLK Total Blackout Curtains more info $16.99 (exp. 9/26/21. $8 saved)

Charisma Down Alternative Blanket Floral | Costco

BLANKETS / THROWS / SHEETS

  • Charisma Down Alternative Blanket King more info $16.99 (exp. 10/22/21. $5 saved)
  • Charisma Down Alternative Blanket Queen more info $14.99 (exp. 10/22/21. $4 saved)
  • Life Comfort Faux Fur Throw more info $11.99 (exp. 9/26/21. $5 saved)
  • Thomasville Comforter Set King more info $49.99 (exp. 9/26/21. $10 saved)
  • Thomasville Comforter Set Queen more info $39.99 (exp. 9/26/21. $10 saved)
  • Wholistic Sheet Set King more info $49.99 (exp 9/26/21. $10 saved)
  • Wholistic Sheet Set Queen more info $39.99 (exp 9/26/21. $10 saved)
Thomasville Relaxed Wash Comforter Set | Sea Mist Stripe | Costco

VACUUM

  • LG Cordless Stick Vacuum more info $349.99 (exp 9/26/21. $50 saved)

LAPTOP

  • HP 14″ Laptop 11th Gen Intel Core i3-1125G4 – 1080p $399.99 (exp. 9/26/21. $100 saved) Item #2220033

HARD DRIVE

  • Seagate 2TB Portable hard Drive $69.99 (exp 9/26/21. $5 saved) Item #3002222
  • Seagate 5TB Portable Hard Drive $114.99 (exp. 9/26/21. $10 saved) Item #5555300

KEYBOARD / MOUSE

  • Logitech Mouse more info $19.99 (exp. 9/25/21. $10 saved)
  • Logitech Wireless Keyboard + Mouse more info $44.99 (exp. 9/25/21. $10 saved)

ROUTER

  • Netgear Nighthawk Wi-Fi 6 Cable Modem Router $209.99 (exp. 9/21/21. $40 saved) Item #1535012

Costco Wet Forget Outdoors Moss Mold Mildew Stain Remover

CLEANING

  • Wet and Forget Outdoors 68-oz $24.99 (exp. 9/26/21. $5 saved) Item #1219756

GLOVES

  • Wells Lamont Hydra Hyde Work Gloves 3-pairs $19.99 (exp. 10/3/21. $5 saved) Item #1369582 (XL); Item #1369581 (L); Item #1369580 (M)

SECURITY

  • Arlo Pro4 Spotlight 3 Camera Security Bundle $399.99 (exp. 9/26/21. $100 saved. Item #1557527)
  • Blink Security Cameras more info $249.99 (exp. 9/26/21. $50 saved)
  • Lorex 8-Channel Security System w/8 cameras $649.99 (Exp. 9/26/21. $150 saved)

DOGS

  • Blue Buffalo Chicken Rice Dog Food 38-lbs $40.99 (exp. 9/26/21. $10 saved)

Some of the above deals may also be found at costco.com for a higher, delivered price, while supplies last.



***Food and Beverage items may be a regional sale***

Here are some Costco unadvertised sales for the Pacific Northwest Region. These are possibly on sale at Costco stores in states: Alaska, Idaho, Montana, Oregon, Utah, and Washington state. YMMV in other states. And of course, all items are while supplies last. When in doubt, call your local Costco before you go.


Blue Diamond Sweet Thai Chili Almonds | Costco

PANTRY

  • Bibigo Sticky White Rice 8/7.4 oz $5.59 (exp. 10/3/21. $2 saved)
  • Blue Diamond Sweet Thai Chili Almonds 2.81 lbs $10.79 (exp. 9/26/21. $2.70 saved)
  • Gourmet Nut Mega Omega Trail mix 26 oz $6.69 (exp. 9/26/21. $2.30 saved)
  • Heavenly Hunks Organic Birthday Cake Cookies 22 oz $6.99 (exp. 9/26/21. $3 saved)
  • Log Cabin Syrup 2/64 oz $4.99 (exp. 9/26/21. $2 saved)
  • Muchies Snack Mix 38-oz $4.99 (exp. 9/26/21. $2 saved)
  • Orgain Protein Pancake Mix 45 oz $9.79 (exp. 10/10/21. $3 saved)
  • Quaker Oatmeal Squares Cereal 2/29 oz $5.39 (exp 10/3/21. $2 saved)
  • Rao’s Marinara Sauce 2/28 oz $8.59 (exp. 10/3/21. $2.40 saved)
  • Schwartz Bros Organic Garlic Herb Bagel Chips 15 oz $5.99 (exp. 9/26/21. $2 saved)
  • SunChips Organic Sweet Hickory Smoke 21 oz $5.59 (exp. 9/26/21. $1.40 saved)
Gourmet Nut Power Up Trail Mix Mega Omega | Costco

REFRIGERATED

  • Pulmuone Teriyaki Stir Fry Udon 29.4 oz $5.99 (exp. 9/26/21. $2 saved)
  • Sabra Organic Pine Nut Hummus 34-oz $4.69 (exp 10/10/21. $2 saved)
  • Wholly Organic Smashed Avocado 16/2 oz $8.99 (exp. 9/26/21. $3.80 saved)

FROZEN

  • Foster Farms Chicken Corn Dogs 28/4 oz $8.99 (exp. 9/26/21. $2.80 saved)
  • Tyson Panko Chicken Tenders 5 lbs $10.49 (exp. 9/26/21. $3.50 saved)

BEVERAGES

  • Buena Vista 2020 Chardonnay North Coast 750ml $7.49 (exp 10/10/21. $4.50 saved)
  • Humm Organic Mango Passion Fruit Kombucha 6/14 oz $8.39 (exp. 9/26/21. $4 saved)
  • Lulu 2020 Rosé of Syrah Washington 750ml $5.99 (exp 10/3/21. $2 saved)
  • Peet’s Aluminum Capsules 80ct (Nespresso compatible) $31.99 (exp. 10/10/21. $8 saved)
  • Suja Organic Vit D + Zinc Shot 10/2 oz $10.49 (exp. 9/26/21. $3.50 saved)

Check out my other post:

Costco Coupon Book SEPTEMBER 2021 (9/1/21 – 9/26/21)

Costco Coupon Book SEPTEMBER 2021 Cover | Small version
Costco Coupon Book SEPTEMBER 2021

YMMV on these Costco unadvertised sales. These products were originally spotted at the Covington, WA (and/or Federal Way, WA Costco and/or Tukwila, WA Costco) location but are not guaranteed to be in stock by the time you visit that Costco warehouse location.
Price and participation may vary so it may not be available at your local Costco or it may not be on sale at your local Costco or it may be a different price at your local Costco (especially in Alaska, Hawaii, and Puerto Rico).
Prices and sales dates may change at any time without notice.
Products may sell out before the end of the sale date and they might not get restocked.
This list does not represent everything that is on sale at Costco.

A lot of products at Costco are seasonal items and when they sell out, they are not restocked.
Some products are sold regionally and other products are sold nationally.
Some products sold nationally may not be on sale at all Costco locations.
Costco inventory changes constantly and I do not have access to that information.
Photos may not be a perfect representation of the product.
Color of the product in real life may vary from the photo.
Unadvertised sales or secret sales in this post are sales that are not included in the Savings Book (aka, the coupon book).
This is just a posting of a deal and not an endorsement or recommendation of any product or of Costco. Please do your own research before making any purchase.
Thanks for visiting my Costco blog!

EXPIRED DEALS

UPDATE 9/22/21.
Alexia Foods Sweet Potato Fries 4 lbs $4.99 (exp. 9/19/21. $2 saved)
Crunch Master Rice Crackers 6/3.5 oz $5.99 (exp. 9/19/21. $2 saved)
Dionis Vanilla Bean hand soap 2ct + refill $13.99 (exp. 9/19/21. $3 saved) Item #1448637
Gerber Wrightwood Toilet more info $119.99 (exp 9/19/21. $20 saved)
Green Seedless Grapes 4-lbs $7.99 (exp 9/19/21. $1 saved)
GSM Stealth Camera Combo $79.99 (exp. 9/20/21. $20 saved) Item #1544375
Hot Pockets Bacon Egg Cheese in Croissant Crust 17ct $9.99 (exp. 9/19/21. $3 saved)
Hot Pockets Pepperoni Cheese 17ct $9.99 (exp. 9/19/21. $3 saved)

HP Pavilion 15.6″ Touchscreen Laptop – 11th Gen Intel Core i5-1135G7 – 1080p $649.99 (exp. 9/19/21. $50 saved)
Jongga Napa Cabbage Kimchi 42.3 oz $4.99 (exp. 9/19/21. $2 saved) Item #737160
Kellogg’s Club Crisps 20-oz $3.99 (exp. 9/20/21. $2 saved)
Kirkland Signature Mac and Cheese $3 off per package (exp 9/19/21. Reg price= $2.99 per lb)
KitchenAid 9-cup Food Processor more info $69.99 (exp. 9/19/21. $30 saved)
Mohawk Accent Rug 30″ x 45″ more info $11.99 (exp. 9/19/21. $3 saved)
Multi Use Wall Shelf $14.99 (exp. 9/19/21. $4 saved) Item #1600014

Ninja Foodi Indoor Grill more info $139.99 (exp. 9/19/21. $40 saved)
OXO SoftWorks Cereal Dispenser 2-ct more info $15.99 (exp 9/19/21. $4 saved)
OXO SoftWorks POP Container Set more info $47.99 (exp. 9/19/21. $12 saved)
Peet’s Major Dickasons Dark Roast K-Cup Pods 75ct $29.99 (exp. 9/19/21. $5 saved)
Razer Homerun Gaming Bundle more info $99.99 (exp. 9/19/21. $70 saved!!)
ROC Retinol Cleanser 2/6 oz $15.99 (exp. 9/19/21. $4 saved)
Thomasville Shag Rug 5’3″ x 7’5″ more info $119.99 (exp. 9/19/21. $30 saved)
Thomasville Shag Rug 7’10” x 10′ more info $199.99 (exp. 9/19/21. $100 saved)

Multi Use Wall Shelf Item 1600014 | Costco Sale Price
GSM Stealth Camera Combo | Costco item 1544375

UPDATE 9/18/21.
Adidas Ladies QT Racer Sneaker $23.99 (exp. 9/9/21. $6 saved) Item #1493146
Adidas Men’s Lite Racer BYD Sneaker $23.99 (exp. 9/9/21. $6 saved) Item #1493473
Beats Flex Wireless Earphones $34.99 (exp. 9/10/21. $10 saved) Item #1507270
Coleman Stainless Steel 20-oz Tumbler w/Straw 2ct $13.99 (exp. 9/12/21. $4 saved) Item #1516452
Dino Buddies Chicken Nuggets 5 lbs $9.99 (exp. 9/12/21. $3 saved)
Duracell Broadview 550 Lumen Head Lamp 3-ct $14.99 (exp. 9/12/21. $5 saved) Item #1600263
Ghirardelli Brownie Triple Chocolate Mix 6/20 oz $8.49 (exp. 9/12/21. $2.50 saved)
Hidden Valley Ranch Homestyle Dressing 2/40 oz $6.99 (exp. 9/12/21. $3 saved)
iRobot Roomba i8+ more info $599.99 (exp 9/12/21. $100 saved)
La Terra Fina Artichoke Parmesan Dip 31-oz $6.49 (exp. 9/12/21. $2 saved)

Lenovo 14″ 2-in-1 Laptop Flex 5 $599.99 (exp. 9/12/21. $100 saved) Item #2222255
Lenovo IdeaPad 5 14″ Laptop – 11th Gen Intel Core i5-1135G7 – 1080p $649.99 (exp. 9/12/21. $150 saved) Item #2222277
Manna Color Changing Confetti Cups 12ct $11.99 (exp. 9/12/21. $3 saved) Item #1371847
Netgear Orbi Wi-Fi 6 Mesh Router w/ 2 Satellite Extenders $399.99 (exp. 9/12/21. $100 saved) Item #1403595
Plackers Micro Mint Flossers 4/150ct + 2/12 ct $7.99 (exp 9/12/21. $2 saved)
SpaFinder (2) $50 Gift Cards $69.99 (exp. 9/10/21. $10 saved) Item #687243
Ore-Ida Bagel Bites Pepperoni Cheese 72ct $5.99 (exp. 9/12/21. $3 saved)
Snake River Farms Wagyu Beef Jerky 10 oz $9.99 (exp. 9/13/21. $5 saved)
Swedish Fish 3.5 lbs $4.99 (exp. 9/13/21. $1.70 saved)

Coleman Stainless Steel 20-oz Tumbler with Straw 2ct | Costco 1516452

UPDATE 9/9/21.
Berkshire Life Twin XL 8-pc Comforter Set $29.99 (exp. 9/7/21. $10 saved) Item #1225223
Firman 7500 Generator more info $799.99 (exp. 9/7/21. $100 saved)

UPDATE 9/7/21.
3M Filtrete Elite Allergen 2200 14″x20″ 3-ct $29.99 (exp. 9/5/21. $10 saved)Item #1006082
3M Filtrete Elite Allergen 2200 20″x20″ 3-ct $29.99 (exp. 9/5/21. $10 saved)Item #1006108.
Arlo Pro4 XL Spotlight 3 camera security bundle $429.99 (exp. 9/5/21. $70 saved) Item #1557527
Casper Memory Foam Mattress King more info $639.99 (exp. 9/5/21. $160 saved)
Casper Memory Foam Mattress Queen more info $479.99 (exp. 9/5/21. $120)
CyberPower Surge Protector 4pk $27.99 (exp. 9/5/21. $7 saved) Item #2001051
Firman 1600 Generator more info $439.99 (exp. 9/5/21. $50 saved)
Fitbit Sense more info $239.99 (exp. 9/6/21. $50 saved)
Kirkland Signature Reynolds Foodservice Foil Roll 12″ x 1000 sq ft $19.49 (exp. 9/5/21. $5 saved)
Kohler Medicine Cabinet more info $99.99 (exp. 9/5/21. $25 saved)
LG gram 15.6″ Laptop – 11th Gen Intel Core i5-1135G7 $799.99 (exp. 9/5/21. $200 saved) Item #2220055
OXO SoftWorks POP Container Set more info $47.99 (exp. 9/5/21. $12 saved)
OXO Toilet Brush 2-ct more info $14.99 (exp. 9/5/21. $5 saved)

Panasonic KX-TG994SK 4-Handset Phone $64.99 (exp. 9/5/21. $15 saved) Item #1909595.
Piper Glen Upholstered Queen Bed more info $269.99 (exp. 9/5/21. $80 saved)
pureLUX Memory Foam Pillow more info $21.99 (exp 9/5/21. $8 saved)
Revival Catalina Tile more info $13.99 (exp 9/5/21. $4 saved)
Roc Hydrate and Plump Night Serum Capsules 50ct $24.99 (exp. 9/3/21. $8 saved) Item #1548685
Samsung 5.1ch Soundbar with Acoustic Beam $279.99 (exp 9/5/21. $100 saved) Item #2605959
Samsung 10.4″ Tab A7 Gray w/64GB micro SD card $209.99 (exp 9/5/21. $50 saved) Item #1481623
Seagate 2TB Ultra Touch Portable Hard Drive $64.99 (exp. 9/5/21. $10 saved) Item #3002222
Sealy Posturepedic Mount Auburn King Mattress $539.99 (exp. 9/5/21. $160 saved. Box spring not included.) Item #1410145
Sealy Posturepedic Mount Auburn Queen Mattress $429.99 (exp. 9/5/21. $120 saved. Box spring not included.) Item #1410147
Timber Ridge Director’s Chair more info $29.99 (exp. 9/5/21. $8 saved)
Timber Ridge Zero Gravity Lounger more info $69.99 (exp. 9/5/21. $10 saved)
Tommy Bahama Beach Chair more info $27.99 (exp 9/5/21. $7 saved)
Waterpik Shower Head more info $29.99 (exp. 9/5/21. $10 saved)

Crunch Master 4 Cheese Sesame Rice Cracker 6/3.5 oz $5.99 (exp; 9/5/21. $2 saved)
Esteban Martin Red Blend 2018 Spain 750ml $4.99 (exp. 9/5/21. $3 saved)Item #512107
Honey Bunches of Oats 2/25 oz $4.99 (exp 9/5/21. $2 saved)
Honey Bunches of Oats w/almonds 2/25 oz $4.99 (exp 9/5/21. $2 saved)
Kellogg’s Frosted Mini Wheats 2/35 oz $5.99 (exp. 9/5/21. $3 saved)
Kraft American Singles 96ct $7.99 (exp. 9/5/21. $2 saved)
Quaker Life Cereal 2/31 oz $5.89 (exp. 9/5/21. $1.50 saved)
Garden Veggies Straws organic 25-oz $5.79 (exp. 9/3/21. $2 saved)
Tillamook Cheddar snacks 52/0.75oz $9.99 (exp. 9/5/21. $3 saved)