The Deal Finder
Costco 30 LIMITED TIME DEALS People Are Grabbing Fast! June 2026
“off the king for four seventy-nine ninety-nine”
Novaform ComfortGrande Advanced King Mattress
$599.99Real in-store prices from 600+ Costco locations. Download on the App Store to track prices, scan shelf tags, and get alerts.
In-store pricing snapshot
Lowest verified warehouse price · 610 Costco warehouses reporting.
* Prices shown are for Costco members only.
The Novaform ComfortGrande Advanced is a 14-inch gel memory foam mattress in King size, featuring triple-action cooling technology for temperature regulation throughout the night. This medium-firmness mattress uses a three-layer construction designed to provide full-body support and pressure relief.
The mattress features EVENcor GelMAX Memory Foam infused with phase change gel that responds to body heat, cooling when you're hot and warming when you're cold. The 3-inch EVENcor GelMAX top layer provides pressure-relieving comfort, while the 3-inch air channel foam middle layer promotes ventilation and weight distribution. An 8-inch base foam layer provides foundational durability and stability. The plush quilted cover incorporates cool-to-touch fibers and antimicrobial treatment.
King size dimensions are 80 inches long by 76 inches wide by 14 inches high, weighing 106.2 pounds. The foam is CertiPUR-US certified for emissions, content, and durability, made in the USA, and contains zero fiberglass. The mattress provides motion isolation to reduce partner disturbance and adaptive support to help align the spine. It is compatible with platform beds, box springs, and adjustable bases. Backed by a 20-year limited warranty.
Showing the newest creator mentions for this item.
The Deal Finder
Costco 30 LIMITED TIME DEALS People Are Grabbing Fast! June 2026
“off the king for four seventy-nine ninety-nine”
Gina's Shopping Life
COSTCO✨GRAB THESE 80 DEALS BEFORE THEY GO!✨APRIL/MAY 2026🛒 LIMITED TIME SAVINGS!
“$480 for the king size.”
Reis World
WHAT'S NEW AT COSTCO?! New Deals and Arrivals! 🔥
“and it looks like if you want the king it's going to be 600”
$3.97
DELI
$2.97
WOMENS APPAREL
$9.97
TOYS/SEASONAL
$29.97
TOYS/SEASONAL
$69.97
HOUSEWARES
$14.97
AUTOMOTIVE
$2.97
CANDY
$29.97
HARDWARE
Showing the 5 most recently updated Costco warehouses
| Warehouse | Price | Status | Updated |
|---|---|---|---|
New Britain#1196→ 405 Hartford Rd New Britain, CT 06053-1507 | $599.99 | In Stock | Jul 5, 2026 |
Kirkland#8→ 8629 120th Ave NE Kirkland, WA 98033-5822 | $599.99 | In Stock | Jul 5, 2026 |
Torrance#1202→ 2640 Lomita Blvd Torrance, CA 90505-5214 | $599.99 | In Stock | Jul 5, 2026 |
San Leandro#118→ 1900 Davis St San Leandro, CA 94577-1209 | $599.99 | In Stock | Jul 5, 2026 |
Stuart#1717→ 3173 S Kanner Hwy Stuart Stuart, FL 34994-4822 | $599.99 | In Stock | Jul 5, 2026 |
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Recent price trends and regional spread across Costco warehouses.
Aggregate price checks across warehouses
Lowest
$479.99
Highest
$599.99
Avg change
+$120.00 (+25.0%)
Latest average
$599.99
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