in 4 offers
The lowest price for Sealy Posture Mattress King Single - Firm right now is $399.00 at Domayne, compared across 4 retailers.
The all-time low was $399.00 on 26 Aug 2026. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 4 Nov 2026.
Sealy Posture Mattress King Single - Firm
Last updated at 04/11/2026 00:48:17
Sealy Posture Singles New York Firm Mattress - King Single
Delivery between 7–12 Nov $99
Snooze Sealy Posture Harmony Mattress, King Single / Firm
Delivery $145
Sealy Posture Mattress - King Single - Firm
Delivery $175
Sealy Posture Classic King Single Firm Mattress
Delivery $99
| Type | Mattress |
| Foundation Type | Base |
| Foundation Included | Yes (With Base) |
Sealy Posture Singles New York Firm Mattress - King Single
Delivery between 7–12 Nov $99
Snooze Sealy Posture Harmony Mattress, King Single / Firm
Delivery $145
Sealy Posture Mattress - King Single - Firm
Delivery $175
Sealy Posture Classic King Single Firm Mattress
Delivery $99
| Type | Mattress |
| Foundation Type | Base |
| Foundation Included | Yes (With Base) |
