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- Verhaert V, Haex B, De Wilde T, et al. Ergonomics in bed design: the effect of spinal alignment on sleep parameters. Ergonomics. 2011;54(2):169-178. DOI: 10.1080/00140139.2010.538725
- Okamoto-Mizuno K, Mizuno K. Effects of thermal environment on sleep and circadian rhythm. J Physiol Anthropol. 2012;31(1):14. DOI: 10.1186/1880-6805-31-14
- Cary D, Briffa K, McKenna L. Identifying relationships between sleep posture and non-specific spinal symptoms in adults: A scoping review. BMJ Open. 2019;9(6):e027633. DOI: 10.1136/bmjopen-2018-027633
Quick Answer
King size mattresses at Costco Canada range from $599 to $1,299, but you cannot test them before buying. A king mattress is the biggest purchase in most bedrooms and two people need to lie on it together to know if it works. The Restonic ComfortCare king at Mattress Miracle costs $1,455, has 1,440 Verticoil springs, and both partners get fitted before you spend a dollar.
Have you ever tried to buy the most important piece of furniture in your bedroom while pushing a shopping cart past pallets of paper towels? That is the Costco king mattress experience. You are making a decision that affects your sleep for the next decade while standing in a warehouse aisle, looking at a mattress sealed in plastic, wondering if it will work for both you and your partner.
A king mattress is 76 by 80 inches of shared real estate. It is the one piece of furniture where two people with potentially very different bodies, sleep positions, and firmness preferences need to find common ground. Costco Canada carries several king options, but the warehouse format makes it impossible to properly evaluate any of them.
King Mattress Options at Costco Canada
Costco Canada's king mattress selection rotates throughout the year, but these brands and price ranges stay fairly consistent.
| Brand | Price Range | Type | Coils | Available |
|---|---|---|---|---|
| Novaform | $599-$799 | Memory foam | N/A | Warehouse + online |
| Sealy Essentials | $699-$849 | Innerspring | ~700 | Warehouse |
| Sealy Posturepedic | $899-$1,099 | Innerspring | ~800 | Warehouse + online |
| Casper Select | $999-$1,199 | Foam / Hybrid | Varies | Online only |
| Beautyrest | $999-$1,299 | Pocket coil | ~1,000 | Varies by location |
| Restonic ComfortCare King | $1,455 | Verticoil | 1,440 | Mattress Miracle |
↔ Scroll to see full table
The price gap between Costco's most affordable king ($599) and the Restonic ComfortCare ($1,455) is $856. But the coil count gap is staggering. A $599 Novaform has zero coils. A $699 Sealy has roughly 700. The Restonic packs 1,440 springs into that same 76 by 80 inch space, giving each body zone more responsive support.
The Two-Person Problem Costco Cannot Solve
Here is the reality that nobody mentions in a Costco aisle: king mattresses are almost always shared by two people. And those two people rarely have the same body type, sleep position, or firmness preference.
Common Couple Mismatches on King Mattresses
- One partner weighs 140 pounds, the other weighs 220 pounds
- One sleeps on their side, the other on their back
- One runs hot, the other gets cold at night
- One tosses and turns, the other stays still
- One has lower back issues, the other has shoulder pain
Brad at Mattress Miracle sees these mismatches every week. "A king mattress needs to work for two different bodies at the same time," he explains. "At Costco, you are buying one mattress based on a guess. Here, both partners lie on the bed together and we adjust until both are comfortable."
This is not a minor detail. When one partner compromises on mattress comfort, they compromise on sleep. And compromised sleep affects everything from mood to productivity to relationship quality. A $599 king that makes one partner uncomfortable is not a bargain. It is a nightly argument waiting to happen.
The Motion Transfer Issue
King mattresses with lower coil counts or basic foam construction transfer more motion across the surface. When one partner rolls over, the other partner feels it. This is a bigger problem on king mattresses than any other size because the larger surface area amplifies the wave effect.
The Restonic ComfortCare king's 1,440 Verticoil springs respond independently. When one partner moves, the motion stays localized to their side. Compare that to a Costco Bonnell coil king where interconnected springs send every movement rippling across the entire bed.
Getting a King Mattress Home from Costco
This is the part of the Costco king mattress experience that nobody thinks about until they are standing in the parking lot staring at a mattress that will not fit in their vehicle.
King Mattress Logistics Reality Check
- Size: 76 x 80 inches (roughly 6.3 by 6.7 feet)
- Weight: 80 to 120 pounds depending on construction
- Vehicle needed: Pickup truck, cargo van, or large SUV with seats folded
- Stairway clearance: King mattresses struggle with tight staircases and narrow doorways
- Help required: Minimum two people to carry safely
Costco.ca does offer delivery on online orders, but warehouse purchases are self-haul. Many Canadian shoppers buy at the warehouse for the lower price and then scramble to figure out how to get a king mattress home. Renting a truck adds $50 to $100 to the total cost, plus your time and effort.
Mattress Miracle's white glove delivery solves this entirely. The delivery team brings the king mattress into your home, sets it up in your bedroom, and removes your old mattress. This service reaches across Southern Ontario including Hamilton, Burlington, Mississauga, Toronto, Kitchener, Waterloo, Guelph, Cambridge, St. Catharines, Niagara Falls, London, Barrie, and Oshawa.
What Makes Costco Canada Different
Canadian shoppers searching for a king mattress at Costco need to know that Costco Canada is not the same as Costco US. Several differences affect what you can buy and how much you will pay.
Costco Canada vs. Costco US for King Mattresses
- Model selection: Canada carries fewer king mattress options than US warehouses
- Pricing: Canadian prices reflect the exchange rate plus import duties and shipping costs
- Brand availability: Some US brands like Stearns and Foster appear less frequently in Canadian warehouses
- Online inventory: costco.ca has a different online mattress catalogue than costco.com
- Warehouse stock: Toronto, Vancouver, and Montreal warehouses carry more variety than smaller markets
If you live in Brantford, Kitchener, Hamilton, or the surrounding Golden Horseshoe area, your local Costco warehouse will carry a subset of the national selection. Stock rotates and what is available one month may be gone the next. This makes it difficult to comparison shop or come back for a second look at a mattress you liked.
Dorothy at Mattress Miracle points out another Canadian-specific issue: "People cross the border to buy mattresses at US Costco because the prices look lower. But once you factor in duty, exchange rate, and the fact that the warranty may not be honoured in Canada, you have not saved anything."
Restonic King Mattresses: Built for Couples
Mattress Miracle carries the full Restonic lineup in king size. Each model is designed with couples in mind, because king mattresses serve two people by definition.
| Restonic Model | King Price | Coils | Key Feature |
|---|---|---|---|
| ComfortCare | $1,455 | 1,440 | Edge-to-edge Verticoil support |
| Revive Reflections ET | From $2,995 | 1,200 | Flippable dual-sided design |
| Luxury Silk and Wool | From $2,995 | 884 zoned | Natural fibre comfort layers |
| Revive Tiffany Rose / Jasmine | From $3,495 | 1,188 | Talalay Copper Latex |
| Revive St Charles / Elizabeth | From $3,750 | 1,188 | 15-inch flagship, maximum luxury |
↔ Scroll to see full table
"When a couple comes in for a king, we spend 20 to 30 minutes on the fitting," Talia explains. "Both partners lie on the mattress at the same time. We check spine alignment for each person. We talk about sleep positions, temperature preferences, and whether one partner disturbs the other. That conversation cannot happen at Costco."
The ComfortCare king at $1,455 sits only $156 to $456 above Costco's mid-range king options but delivers nearly double the coil count and includes professional fitting. For couples who want the best support available, the Revive lineup offers features that simply do not exist at any Costco price point.
Frequently Asked Questions
How much is a king size mattress at Costco Canada?
King size mattresses at Costco Canada range from $599 to $1,299. Novaform and Sealy models sit at the lower end, while Casper and Beautyrest options push toward $1,299. Online-only models sometimes differ in price from warehouse stock.
Does Costco Canada deliver king mattresses?
Costco.ca offers delivery on king mattresses ordered online, but warehouse purchases must be self-hauled. A king mattress measures 76 by 80 inches and requires a truck, van, or SUV with the seats folded. It will not fit in most sedans.
Can two people test a Costco king mattress before buying?
No. Costco mattresses are sealed in plastic wrap on warehouse pallets. You cannot lie on them, test firmness, or check how two bodies interact on the surface. At a mattress store like Mattress Miracle, both partners can test the bed together.
What king mattress does Mattress Miracle recommend?
The Restonic ComfortCare king at $1,455 features 1,440 Verticoil springs and multi-layer comfort foam. For couples wanting premium support, the Restonic Revive line starts at $2,995 for a king with Talalay Copper Latex and 1,188 precision coils.
Is a king mattress from Costco Canada the same as one from a US Costco?
Not always. Costco Canada carries warehouse-exclusive models that differ from US Costco stock. Model numbers, comfort layers, and even coil counts can vary between countries. Canadian pricing also reflects the exchange rate and import costs.
What is the return policy on king mattresses at Costco Canada?
Costco Canada offers an open-ended return policy on mattresses with no time limit. However, returning a king mattress requires transporting it back to the warehouse yourself, which is difficult given the 76 by 80 inch size and 80 to 120 pound weight.
Your King Mattress Should Fit Both of You
Mattress Miracle carries the full Restonic lineup in king size, starting at $1,455 for the ComfortCare with 1,440 springs. Brad, Dorothy, and Talia fit both partners at the same time so nobody compromises on comfort.
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 is a king size mattress at Costco Canada?
King size mattresses at Costco Canada range from $599 to $1,299. Sealy and Novaform models sit at the lower end, while Casper and Beautyrest options push toward $1,299. Online-only models sometimes differ in price from warehouse stock.
Does Costco Canada deliver king mattresses?
Costco.ca offers delivery on king mattresses ordered online, but warehouse purchases must be self-hauled. A king mattress measures 76 by 80 inches and requires a truck, van, or SUV with the seats folded. It will not fit in most sedans.
Can two people test a Costco king mattress before buying?
No. Costco mattresses are sealed in plastic wrap on warehouse pallets. You cannot lie on them, test firmness, or check how two bodies interact on the surface. At a mattress store like Mattress Miracle, both partners can test the bed together.
What king mattress does Mattress Miracle recommend?
The Restonic ComfortCare king at $1,455 features 1,440 Verticoil springs and multi-layer comfort foam. For couples wanting premium support, the Restonic Revive line starts at $2,995 for a king with Talalay Copper Latex and 1,188 precision coils.
Is a king mattress from Costco Canada the same as one from a US Costco?
Not always. Costco Canada carries warehouse-exclusive models that differ from US Costco stock. Model numbers, comfort layers, and even coil counts can vary between countries. Canadian pricing also reflects the exchange rate and import costs.
What is the return policy on king mattresses at Costco Canada?
Costco Canada offers an open-ended return policy on mattresses with no time limit. However, returning a king mattress requires transporting it back to the warehouse yourself, which is difficult given the 76 by 80 inch size and 80 to 120 pound weight.