Checked Oct 19, 2026, 7:03 AM ET
Cheapest King Foam Mattress
We compared the king size of 13 foam mattresses from 5 brands. The cheapest in stock right now is the Original Green Tea Memory Foam Mattress at $429. In-stock King prices run up to $3,998, with a median of $2,199.
King Foam Mattresses Ranked by Price
| # | Mattress | King price | Stock | Store link |
|---|---|---|---|---|
| 1 | Original Green Tea Memory Foam Mattress Zinus · Foam mattress | $429 | ✅ In stock | Check ↗ |
| 2 | Balanced Comfort Core Memory Foam Mattress Zinus · Foam mattress | $799 | ✅ In stock | Check ↗ |
| 3 | Balanced Comfort Signature Memory Foam Mattress Zinus · Foam mattress | $849 | ✅ In stock | Check ↗ |
| 4 | Balanced Comfort Luxe Memory Foam Mattress Zinus · Foam mattress | $999 | ✅ In stock | Check ↗ |
| 5 | The Keetsa Cloud® Keetsa · Foam mattress | $1,590 | ✅ In stock | Check ↗ |
| 6 | The GravityLux Soft WinkBeds · Foam mattress | $2,199 | ✅ In stock | Check ↗ |
| 7 | The GravityLux Medium WinkBeds · Foam mattress | $2,199 | ✅ In stock | Check ↗ |
| 8 | The GravityLux Firm WinkBeds · Foam mattress | $2,199 | ✅ In stock | Check ↗ |
| 9 | The Keetsa Supreme Keetsa · Foam mattress | $2,390 | ✅ In stock | Check ↗ |
| 10 | Original Lull Mattress Lull · Foam mattress | $3,140 | ✅ In stock | Check ↗ |
| 11 | Starling Signature Contour Nest Bedding · Foam mattress · Medium | $3,173 | ✅ In stock | Check ↗ |
| 12 | Original Premium Mattress Lull · Foam mattress | $3,998 | ✅ In stock | Check ↗ |
| 13 | Ultra Cooling Green Tea Memory Foam Mattress Zinus · Foam mattress | $999 | ❌ Sold out | Check ↗ |
Store buttons go straight to the brand's own product page. No affiliate tags yet. Prices are the listed price on the brand's site at our last check (Oct 19, 2026, 7:03 AM ET); coupons at checkout can make it lower. Disclosure
More Cheapest-Mattress Lists
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How We Rank
Every row is the lowest listed King price for that model on the brand's own site at our last check, including different firmness or cover options. In-stock models come first. Foam means no coil layer. Coupons at checkout and bundles aren't included, so the price you pay can be lower. Split-king "one side" prices are left out so you compare whole beds.