A king-size iComfort mattress typically costs about $1,800-$4,500 before tax, with an average sale price near $2,800-$3,200 for the mattress alone. Model generation, foam construction, retailer discounts, delivery, and whether an adjustable base is included can shift the final bill substantially.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| King iComfort mattress | $1,800 | $3,000 | $4,500 | Price varies by model and sale |
| White-glove delivery | $0 | $100 | $250 | May be included with purchase |
| King adjustable base | $700 | $1,500 | $3,000 | Features and construction affect price |
| Mattress protector | $60 | $120 | $250 | Optional, king size |
| Estimated mattress-and-base setup | $2,500 | $4,500 | $7,500 | Before tax, with delivery where applicable |
What a King-Size iComfort Mattress Usually Costs
For a new king iComfort mattress, a practical planning range is $1,800-$4,500. The lower end generally reflects a discounted or entry-level foam model; midrange models commonly land around $2,500-$3,500 on promotion, while premium hybrids or feature-rich models can reach $4,000-$4,500 or more at regular retail. A king mattress measures about 76 by 80 inches, so it uses more material than a queen and typically costs more.
Most shoppers should compare the actual sale price and model specifications, not just the advertised list price. Serta’s iComfort names and collections have changed over time, and prices vary between current collections, remaining inventory, and older models sold by retailers. A quoted price may include delivery or other services, so check the checkout total before comparing it with another store’s offer.
Assumptions: U.S. retail pricing for a new king mattress, standard delivery area, no adjustable base, and ordinary promotional discounts.
How Foam Layers and Retailer Pricing Shape the Quote
A mattress quote usually combines the mattress itself with delivery, optional accessories, and any selected base. For a typical king iComfort purchase, mattress pricing accounts for most of the total; delivery and setup can add little or nothing when bundled, or around $100-$250 when charged separately. Taxes depend on local rates and are generally calculated at checkout.
| Quote item | Low | Typical | High | What changes the charge |
|---|---|---|---|---|
| King foam mattress | $1,800 | $3,000 | $4,500 | Model, foam layers, construction, sale |
| Labor and in-home setup | $0 | $75 | $175 | Included service or paid setup |
| Delivery | $0 | $100 | $250 | Retailer, distance, delivery tier |
| Old mattress removal | $0 | $50 | $150 | Local service and disposal rules |
| Protector or sheet set | $60 | $180 | $400 | Brand and material quality |
Labor charges are not always itemized. If a retailer bills separately for in-home placement, a simple estimate might be 1-2 hours × $50-$90 per hour = $50-$180. Many stores instead quote a flat setup fee or include basic delivery in a promotion. Ask whether the crew will carry the mattress upstairs, remove packaging, and take away the old bed.
The largest controllable line item is usually the mattress model, while delivery and removal are the most easily overlooked extras. A low advertised price can become less attractive if it excludes delivery, setup, or a trial-period return fee.
Which iComfort Specs Push a King Price Higher
Construction and comfort features explain much of the price spread. Basic all-foam versions generally cost less than models with added cooling materials, zoned support, thicker comfort layers, or hybrid construction with coils. A king model’s larger surface area can magnify the price difference between versions, but the specific model and retailer discount matter more than size alone.
As a rough comparison, a straightforward foam king may be priced around $1,800-$2,700 on sale. A thicker or more advanced foam design may run $2,700-$3,700, while premium hybrid or higher-tier models can fall around $3,500-$4,500. These are planning ranges, not fixed manufacturer prices; identical model names can also be listed at different prices across retailers.
Compare the exact model name, height, construction, and comfort options before treating two iComfort prices as equivalent. Mattress height around 12-14 inches is common across many contemporary designs, but height alone does not prove that one model has better support or durability. Look for the precise materials and warranty terms in the product details.
Firmness selection may not change the price when the same model is offered in multiple feels, but split configurations or specialized versions can. A split king is usually two separate twin XL mattresses, and the mattress-only price can be similar to or higher than one standard king depending on the collection and sale. A matching split adjustable base adds a separate and sometimes substantial expense.
How Much Do Delivery and an Adjustable Base Add?
Delivery ranges from free to about $250 for many standard residential orders. In-home setup, stair carries, remote delivery areas, or old-mattress removal can add roughly $50-$200, though store policies differ. Confirm whether the quoted delivery is threshold drop-off or room-of-choice service; these are not the same level of service.
A king adjustable base commonly adds $700-$3,000. A basic model with head elevation is generally at the lower end, while a sturdier base with independent head and foot adjustment, massage, presets, or app controls can cost $1,500-$3,000. A premium split king base may cost more because it uses two adjustable units.
Adding a base can raise a mattress-only quote by $700-$3,000 before accessories or taxes. For example, a $3,000 king mattress plus a $1,200 base and $150 delivery creates a $4,350 subtotal. Verify compatibility with the mattress and bed frame, and check whether the retailer’s base warranty differs from the mattress warranty.
King iComfort Prices by U.S. Retail Market
Retail prices can differ by location because stores vary in promotional schedules, delivery coverage, local competition, and service costs. In major metro areas, delivery and setup can be roughly 5%-15% higher than in a retailer’s core service zone, especially when a home is far from the distribution center. Rural delivery may carry a similar surcharge or take longer, even if the mattress price is discounted.
Regional differences in the mattress price itself are less predictable than service fees. A local retailer may offer a sharper sale than a national chain, while a market with fewer competing stores may have fewer discounts. As a working estimate, compare the same model across at least two retailers and allow a 5%-15% difference in the total delivered quote, rather than assuming the mattress has a standard regional price.
Use the delivered, tax-inclusive total for local comparisons, not a national list price. Ask each store for the same service level and confirm the return window, pickup fee, and delivery date. A $100 lower mattress price may not save money if delivery and removal cost $200 more.
Three King Mattress Quotes With Different Setups
These examples show how model choice and service bundles change the checkout amount. They assume ordinary access and exclude sales tax, which varies by state and locality.
| Purchase scenario | Mattress | Services or add-ons | Estimated subtotal |
|---|---|---|---|
| Discounted foam model | $2,100 | $100 delivery, $0 setup | $2,200 |
| Midrange model with removal | $3,000 | $150 delivery and setup, $75 removal | $3,225 |
| Premium hybrid with base | $4,300 | $1,800 base, $200 delivery, $150 protector | $6,450 |
In the first example, a sale price near $2,100 can be a reasonable entry point if the model is new and the stated return policy is acceptable. The second reflects a common midrange purchase with paid delivery and old-bed pickup. The third shows why a premium mattress-and-base purchase should be budgeted separately from a mattress-only price.
A useful quote should identify the mattress model and list each service that contributes to the subtotal. Compare like-for-like configurations, including base size, setup, removal, accessories, and any fees if the mattress is returned.
Can a Previous-Generation iComfort Save Money?
Discontinued or previous-generation iComfort mattresses may sell for about $1,300-$2,800 in king size, depending on condition, remaining inventory, and whether the item is new, open-box, or refurbished. These prices can be lower than current models, but availability is inconsistent and a retailer may not be able to replace the mattress with the same model later.
Before buying clearance stock, confirm that it is new and unused, ask how long it has been stored, and review the written warranty. Open-box products may have different return rights or warranty coverage. A clearance discount is less compelling if the mattress is final sale or if delivery and removal charges erase the savings.
Compare warranty and return terms alongside the discount, especially for clearance or open-box inventory. A previous-generation model can offer a lower price when its construction and comfort suit the buyer, but a steep markdown should not replace checking the exact product condition and seller policy.
Ways to Lower the King iComfort Checkout Price
First, decide whether a standard king mattress is sufficient or whether a split king and adjustable base are genuinely needed. Buying a mattress alone rather than as a bundled sleep system can avoid an unnecessary $700-$3,000 base expense. If the existing foundation is compatible and in good condition, retaining it may also reduce the purchase total.
Compare retailer quotes for the same model and ask whether the sale price includes delivery, setup, and removal. Promotions may include free delivery or accessories, but an accessory bundle is not automatically a saving if the items were not already on the shopping list. Check the final price after fees and local tax before placing an order.
Controlling the scope and comparing complete quotes usually saves more than focusing on a small accessory discount. Ask whether a floor model, last-season version, or scheduled sale offers a lower price, and verify that any discount does not change the return or warranty terms.
Preparing the delivery path can prevent avoidable complications: measure doorways, stairs, hall turns, and the bed frame before ordering a king mattress. Confirm the old mattress pickup fee in advance and check local rules for disposal. If delivery requires a special carry or appointment, getting that charge in writing makes the budget more reliable.