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- Kovacs FM, Abraira V, Peña A, et al. Effect of firmness of mattress on chronic non-specific low-back pain: randomised, double-blind, controlled, multicentre trial. Lancet. 2003;362(9396):1599-1604. DOI: 10.1016/S0140-6736(03)14792-7
Quick Answer
Costco double mattress sale prices drop to $249 to $549 but sale-exclusive models often have fewer coils and thinner comfort layers than regular stock. Restonic ComfortCare double has 980 individually wrapped coils at $950 with professional fitting included. Visit Mattress Miracle at 441 1/2 West Street, Brantford or call (519) 770-0001.
Are you watching for the next Costco double mattress sale to grab a deal, or have you already spotted a sale price that looks too good to pass up? Before you load a mattress into your cart, there is something worth understanding about how warehouse sale pricing works in the mattress industry.
Brad, one of our sleep specialists at Mattress Miracle, spent years in mattress manufacturing before joining our team. He explains what happens behind the scenes when a double mattress gets a sale sticker at Costco, and why the price tag only tells part of the story.
How Costco Double Mattress Sales Work
Costco operates on a high-volume, low-margin model. Mattresses fit this model, but not the way most shoppers assume. There are two distinct types of mattress sales at Costco, and the difference matters for what you bring home.
Inventory markdown sales. These happen when Costco discounts their existing, year-round stocked mattresses. The model number stays the same and the specifications are identical to what was sold at full price. This is a genuine discount on the same product. These markdowns are typically $50 to $100 off.
Sale-exclusive model promotions. This is where it gets complicated. Manufacturers create specific models for Costco promotional events. These carry familiar brand names and similar-sounding model names, but the model number is different. Inside, the specifications often differ from the brand's regular retail offerings.
How to Spot the Difference
Check the model number on the sale mattress against the brand's regular lineup on their website. If the model number does not appear in their standard catalogue, it is a sale-exclusive build. This does not automatically mean it is worse, but it means you cannot compare it directly to reviews of the brand's regular models.
What Gets Cut to Hit Sale Prices
Manufacturers need to hit a target price point for Costco promotions while maintaining enough margin for both companies. Something has to give. Dorothy, another member of our team, walks customers through these trade-offs regularly.
Coil count reduction. The single most common specification cut. A brand's standard double might have 800 coils in its retail version. The sale-exclusive Costco version might have 500 to 600. Fewer coils mean fewer independent support points, which affects how well the mattress conforms to your body and how long the support system lasts.
Thinner comfort layers. The foam, latex, or fibre layers above the coils determine immediate comfort feel. Regular models might have 2 to 3 inches of comfort material. Sale versions often trim this to 1 to 1.5 inches. The mattress feels fine for the first few weeks but body impressions appear sooner.
Lower foam density. Even when foam thickness looks the same, density can differ. Higher-density foam costs more but lasts longer. Sale models frequently use 1.5 to 2.0 lb/ft3 foam where the regular version uses 2.5 to 3.0 lb/ft3. You cannot feel this difference on day one, but you will notice it by month six.
Simplified edge support. Premium mattresses use reinforced perimeter coils or high-density foam rails along the edges. Sale models may use standard gauge wire throughout or thinner foam edging. This affects how stable the mattress feels when sitting on the edge and how much usable sleep surface you actually have.
Sale Models vs. Regular Stock Compared
Double Mattress Specification Comparison
| Specification | Costco Sale Model | Costco Regular | Restonic ComfortCare |
|---|---|---|---|
| Price | $249-$399 | $399-$699 | $950 |
| Coil Count | 300-500 | 500-700 | 980 |
| Comfort Layer | 1-1.5 inches | 1.5-2.5 inches | Multi-layer integrated |
| Edge Support | Basic | Standard | Reinforced |
| Try Before Buying | No | No | Yes |
| Professional Fitting | No | No | Yes |
↔ Scroll to see full table
When Costco Double Mattress Sales Happen
Costco mattress sales follow a predictable annual rhythm, though exact dates shift each year.
Typical Sale Calendar
- January/February: Post-holiday clearance. Floor models and discontinued stock. Best for genuine markdowns on existing inventory.
- Victoria Day (May): First major promotional event. Mix of markdowns and sale-exclusive models.
- Canada Day (July): Mid-year promotional push. Often the deepest discounts on sale-exclusive models.
- Labour Day (September): Second major promotional event. Similar mix to Victoria Day.
- Boxing Week (December): Year-end clearance combined with promotional models. Inventory varies significantly by location.
Talia from our team notes an important pattern: the January and February sales tend to be genuine markdowns on existing stock, while the holiday weekend sales (Victoria Day through Labour Day) more commonly feature sale-exclusive models built specifically for the promotion.
Double Size Specific Considerations
The double (also called full) mattress occupies a particular niche in the Canadian market. At 54 by 75 inches, it serves specific use cases that affect how sale pricing should factor into your decision.
Space-constrained bedrooms. Doubles are the largest mattress that fits comfortably in a 10-by-10 room with a dresser and nightstand. If you are furnishing an apartment, condo, or smaller home, the double is often the practical choice. This means the mattress needs to work well for years in a space where upgrading to a larger size is not an option.
Solo sleeper primary bed. For a single adult who finds a twin too narrow, the double provides 15 extra inches of width. As a primary bed for nightly use, durability matters more than initial price. A sale mattress that sags in 18 months costs more in the long run than a properly built mattress that lasts.
Couple size limitations. Two adults sharing a double each get 27 inches of width, which is narrower than a standard crib mattress. The mattress needs to be supportive enough that neither partner rolls toward the centre. Fewer coils and thinner comfort layers make this centre-roll problem worse.
Double Size Return Challenge
If a sale double mattress does not work out, returning it to Costco means moving a 54-by-75-inch mattress. For apartment dwellers without a truck, this involves coordinating pickup or renting a vehicle. The return policy is generous, but the logistics of returning a large mattress are not simple.
The Restonic ComfortCare Double Alternative
The Restonic ComfortCare double is priced at $950, which is above Costco's sale range. But the specifications explain the difference in price and in sleep quality.
Restonic ComfortCare Double Specifications
- 980 individually wrapped coils providing zoned support (nearly double the coil count of most Costco sale doubles)
- Multi-layer integrated comfort system bonded to the coil unit so it cannot shift, bunch, or separate
- Reinforced edge support that maintains the full 54-by-75 sleep surface instead of losing inches to edge sag
- Professional fitting included at our Brantford showroom where you test the mattress before committing
- White glove delivery to Hamilton, Burlington, Mississauga, Toronto, Kitchener, Waterloo, Guelph, Cambridge, St. Catharines, Niagara Falls, London, Barrie, and Oshawa
Brad's perspective: "A $300 sale double with 400 coils gives you about 7.4 coils per square inch. Our ComfortCare double with 980 coils gives you 24.2 coils per square inch. That is the difference between a mattress that pushes back evenly under every part of your body and one that has gaps in its support map."
Compare Before the Sale Ends
Come test a Restonic ComfortCare double in person. Know exactly what 980 coils feels like so you can make an informed comparison with any sale mattress.
Mattress Miracle
441 1/2 West Street, Brantford, Ontario N3R 3V9
Phone: (519) 770-0001
Mon-Wed 10-6 | Thu-Fri 10-7 | Sat 10-5 | Sun 12-4
White glove delivery to Hamilton, Burlington, Mississauga, Toronto, Kitchener, Waterloo, Guelph, Cambridge, St. Catharines, Niagara Falls, London, Barrie, and Oshawa.
Frequently Asked Questions
How much do double mattresses cost during Costco sales?
Costco double mattress sale prices typically range from $249 to $549. Regular prices for the same models run $349 to $699. The discount usually reflects $50 to $150 in savings, though sale-specific models may have lower base specifications than regularly stocked options.
Are Costco sale mattresses the same as their regular models?
Not always. Costco frequently brings in sale-exclusive models with similar brand names but different model numbers. These sale versions may have fewer coils, thinner comfort layers, or less dense foam compared to the year-round stocked version.
When does Costco typically have double mattress sales?
Major Costco mattress sales typically coincide with holiday weekends including Victoria Day, Canada Day, Labour Day, and Boxing Week. Warehouse-specific clearance events happen unpredictably when floor models rotate or seasonal inventory changes.
Can you try a double mattress before buying during a Costco sale?
In-warehouse purchases allow you to see the mattress packaging but not test it for comfort. Online sale orders ship directly to your home with no in-store testing option. Costco does offer returns, but the return process for mattresses requires arranging pickup of a large item.
How does Restonic ComfortCare double pricing compare to Costco sale prices?
The Restonic ComfortCare double is priced at $950 with 980 individually wrapped coils. Costco sale doubles range from $249 to $549 with 300 to 600 coils. The price difference reflects a significant gap in coil count, comfort layer quality, and overall build specifications.
Is a Costco double mattress sale worth waiting for?
If you are already committed to buying from Costco, waiting for a sale saves $50 to $150. However, if the sale model has fewer coils or thinner foam than the regular version, the savings may come at the cost of durability. Checking model numbers between sale and regular inventory reveals whether specifications match.