king size mattress 14+ inch
Worth a lookShows low returns (0.5%), but prices mostly outside the sweet spot ($119.61–$592.20) keeps it on the watch list.
Returns
Incredible0.5%return rate — above 5% kills the launch gate
Brand share
Incredible34%top-5 brand share — no brand owns this niche
Competition
Incredible19%top-5 click share — an open shelf
Review moat
Good793.12avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Market size
Good$310K$310K/yr · 106K searches
Avg price
Okay$298.51avg listing price — sweet spot $15–$100
Conversion
Bad1.0%search→purchase rate — share of searches ending in a sale
Growth
Bad-43.7%90-day search growth — must beat 0% to launch
Price range
Bad$119.61–$592.20cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, king size mattress 14+ inch is a $310K/yr Amazon United States market (106K searches/yr). The top 5 brands hold 34% of demand. Demand peaks in Mar–Aug. Verdict: Worth a look — 55/100.
Data updated Jul 30, 2026 · scored weekly · How we score niches
king size mattress 14+ inch market data
- Units sold / yr
- 1K–2K
- avg 0–100/product
- Revenue / yr
- $373K–$448K
- units × avg price
- Conversion rate
- 1.0%
- Avg BSR
- #413
- Page quality
- 0%
- Prime
- 54%
- Sponsored
- 94%
- Out of stock
- 44.3%
- Avg brand age
- 17 months
- Avg seller age
- 184 days
Competition & brand share
Clicks spread well past the top 5 (19% combined) — an open shelf where new products get seen.Brands
57 rising
Sellers
75
Top-5 brand share
34%
Top 20: 74%
Top-5 click share
19%
Top 20: 52%
Open market
62%
- Novilla11%
- Generic7%
- SayTale6%
- EEN EEN SLEEP5%
- RWAEZYBLUX5%
- Puzdaz4%
Demand & seasonality
Weekly Amazon search volume, last 98 weeks — -43.7% search growth over the last 90 days.Peak months: Mar, Aug · busiest ÷ quietest = 1.7×
Top king size mattress 14+ inch products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
SayTale 14 Inch King Size Mattress Hybrid Mattress Gel Memory Foam Individual Pocket Springs King Mattress Pressure Relief Motion Isolation Medium Firm CertiPUR US Certified Fiberglass Free
SayTale$279.634.6★43 rev
Novilla King Size Mattress in a Box 14 Inch King Gel Memory Foam Mattress
Novilla$304.904.4★5,392 rev
King Mattress 14 Inch king size Mattress in a Box Medium Firm Hybrid Mattress with Individually Wrapped Pocket Springs for Excellent Motion Isolation & Strong Edge Support Cooler Breathable Sleep
ailis$307.714.5★278 rev
Puzdaz King Size Mattress 14 Inch Mattress King Size - Memory Foam & Individually Pocket Coils Springs Pressure Relief Motion Isolation Edge Support CertiPUR-US Certified Medium Firm
Puzdaz$218.363.3★12 rev
Moccona King 14 Inch Hybrid Mattress with Memory Foam - Mattress in a Box with Individual Pocket Spring - Medium Firm Mattress Sleep Support Pressure Relief CertiPUR-US Certified
Moccona$227.044.1★132 rev
Newest
by launch date
FANSACE Hybrid 14 Inch King Mattress for Back Pain (14K12SAC)
FANSACE$432.5416 rev
King Size Mattress 14 Inch King Hybrid Mattress in a Box Medium Firm King Size Mattress Memory Foam with Individual Pocket Spring for Motion Isolation & Silent Sleep & Pressure Relief CertiPUR-US
Generic$239.1173 rev
CRYREINA King Size Mattress 14 Inch King Mattress Hybrid in Box Individual Pocket Springs Medium Firm Breathable and Comfort
CRYREINA$218.0857 rev
Puzdaz King Size Mattress 14 Inch Mattress King Size - Memory Foam & Individually Pocket Coils Springs Pressure Relief Motion Isolation Edge Support CertiPUR-US Certified Medium Firm
Puzdaz$218.3612 rev
Sleepmax King Size Mattress 14 Inch - Deep Sleep Hybrid Mattress for Pain Relieving - Deluxe Cooling Bed in a Box for Back & Side Sleepers - CertiPUR-US Certified 365-Night Trial Forever Warranty
Sleepmax$592.20241 rev
Trending
90-day click momentum
Zhihuvg King Size Mattress 14 Inch Hybrid Mattress in a Box with Individual Pocket Spring Gel Memory Foam King Mattress Breathable Supportive and Pressure Relief for Cool Night Medium Firm
Zhihuvg$266.643.9★
King Size Mattress 14 Inch King Hybrid Mattress in a Box Medium Firm King Size Mattress Memory Foam with Individual Pocket Spring for Motion Isolation & Silent Sleep & Pressure Relief CertiPUR-US
Generic$239.114.6★
Sleepmax King Size Mattress 14 Inch - Deep Sleep Hybrid Mattress for Pain Relieving - Deluxe Cooling Bed in a Box for Back & Side Sleepers - CertiPUR-US Certified 365-Night Trial Forever Warranty
Sleepmax$592.204.5★
Puzdaz King Size Mattress 14 Inch Mattress King Size - Memory Foam & Individually Pocket Coils Springs Pressure Relief Motion Isolation Edge Support CertiPUR-US Certified Medium Firm
Puzdaz$218.363.3★
SayTale 14 Inch King Size Mattress Hybrid Mattress Gel Memory Foam Individual Pocket Springs King Mattress Pressure Relief Motion Isolation Medium Firm CertiPUR US Certified Fiberglass Free
SayTale$279.634.6★
What buyers say about king size mattress 14+ inch
What buyers praise and complain about, mined from review topics.What buyers love
“it is comfortable for me”
“A good firm mattress thats comfortable”
“Great buy for the money”
“Amazing quality”
“This mattress is very soft and comfortable”
“its true to size”
“There is no sinking feeling”
“very well put together”
“just as described”
“No weird smell”
What buyers complain about
“It not crazy soft”
“Back pain& discomfort”
“When i lay in the middle because of sagging”
“does not last”
“honestly didnt think memory foam would be for me”
“EXTREMELY POOR QUALITY”
“Not as advertised”
“it's just not built that sturdy”
“Chemical smell”
“It does not have enough flexibility”
Top return reasons
Common questions
- Is king size mattress 14+ inch profitable to sell on Amazon United States?
- The niche generates $310K/yr across 93 tracked products. 61 of 75 products launched in the last 360 days are still selling. 90-day search growth is -43.7%. Flapen's verdict: Worth a look (55/100).
- How competitive is the king size mattress 14+ inch niche?
- 57 brands and 75 sellers compete. The top 5 products take 19% of clicks and top 5 brands hold 34% of demand.
- What do buyers complain about in king size mattress 14+ inch?
- Top complaints mined from reviews: Hard Feel, Comfort-Overall, Sags/Sinks. The return rate is 0.5%.
- When does demand for king size mattress 14+ inch peak?
- Demand peaks in Mar–Aug; the busiest month runs 1.7× the quietest.
- What does it cost to enter the king size mattress 14+ inch niche?
- Listings span $119.61–$592.20; the average listing price is $298.51 (sweet spot $15–$100). The average incumbent carries 793 reviews — the moat a new listing must climb.