California King Box Spring
FailAn estimated 6.9% of orders come back, so California King Box Spring is a Fail.
- Flapen Score
- 47 / 100Ranks 6,404 of 11,240 Home & Kitchen niches · −2 vs the category median of 4947
- Market size
- $496K/yr142K searches / yr
- 90-day growth
- -0.5%search demand this quarter
- Competition
- 50%top-5 click share · 17 brands · 20 sellers
Flapen Score
California King Box Spring against its category
The dotted line is the Home & Kitchen average. Past it, California King Box Spring is stronger. Inside it, weaker.
Market
The California King Box Spring market on Amazon at a glance
Shoppers on Amazon United States searched for California King Box Spring 142K times last year and spent an estimated $496K. The top 5 brands take 66% of clicks. Flapen scores it 47 out of 100, a Fail.
01 · Demand
An estimated 3.0% of those searches ended in a purchase.
Shoppers searched for this 142K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 3.0% of those searches ended in a purchase. Searches in the last 90 days moved -0.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $496K a year.
- Searches, last 12 months
- 142K
- Growth, 90 days vs prior 90
- -0.5%
- Conversion, latest week
- 3.0%
- Market size, estimated
- $496Ka year
- Peak month
- March1.2× the quietest month
- Top search term
- california king box spring61K searches a year
02 · Price
A sale here is worth $115.24.
Listings sell for $115.24 on average, from $73.59 to $142.88. Amazon reports units sold in ranges. This niche sold 3K to 4K a year. The average listing sells 100 to 250 of them. At $115.24 that is $12K to $29K a year per listing.
- Average price
- $115.24above the $15 to $100 sweet spot
- Price range
- $73.59–$142.88
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 3K–4K
- Units per listing a year
- 100–250
- Revenue per listing a year
- $12K–$29K
- Returns
- 6.9%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads and reviews.
92% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #431 within Mattresses & Box Springs. It carries 2,411 reviews at 4.36 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 92%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #431in Mattresses & Box Springs
- Average rating
- 4.36 starsAmazon United States average 4.42 stars
- Average reviews
- 2,411per listing
- Listings tracked
- 25
04 · Newcomers
4 of last year's 11 launches cleared the first-year sales bar.
11 products launched here in the last 12 months. 4 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 32 months on average, so a newcomer is not facing entrenched names.
- Launched, last 12 months
- 11
- Successful launches
- 4Amazon's first-year sales bar
- Average brand age
- 32 months
Products
Top California King Box Spring products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 30, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Amazon Basics Smart Box Spring Bed Base 9-Inch Height Mattress Foundation Tool-Free Easy Assembly Metal Frame Cal King 83 x 71 x 9 White
- Price
- $142.88
- Rating
- 4.5/5
- Reviews
- 38,479
- Age
- 7y ago
MAF Cal King Size King Box Spring 10 Inch High Profile Box Spring Cal King 3500 lbs Black Heavy Duty Metal Mattress Foundation with Easy Clean Fabric Cover Easy Assembly
- Price
- $141.41
- Rating
- 4.6/5
- Reviews
- 833
- Age
- 1y ago
Snaye Box Spring California King Bed Base 5 Inch 3000lbs Heavy Duty Cali King Box Spring Metal Mattress Foundation Tool-Free Easy Assembly Noise Free
- Price
- $100.34
- Rating
- 4.3/5
- Reviews
- 889
- Age
- 10mo ago
Zinus 9 Inch Metal Smart Box Spring with Quick Assembly California King
- Price
- $123.50
- Rating
- 4.4/5
- Reviews
- 4,069
- Age
- 4y ago
RLDVAY California-King Box-Spring 9 inch Metal Cal King Box Spring Only Heavy Duty Cali King Box Spring with Fabric Cover Easy Assembly Non Slip Noise Free
- Price
- $132.42
- Rating
- 4.2/5
- Reviews
- 1,344
- Age
- 3y ago
Trending
estimated 90-day click momentum
Beautyrest Standard Cal King Mattress Foundation
- Price
- $122.07
- Rating
- 4.2/5
- Reviews
- 11
- Age
- 7mo ago
DORITRON California King Box Spring 9 Inch 3000lbs Heavy Duty Cal King Box Spring Bed Base Metal Mattress Foundation Easy Assembly Noise Free
- Price
- $105.57
- Rating
- 4.4/5
- Reviews
- 166
- Age
- 7mo ago
DORITRON 5 Inch California King Box Spring Only 3000lbs Heavy Duty Cali King Box Spring Bed Base Metal Mattress Foundation Easy Assembly Noise Free
- Price
- $98.25
- Rating
- 4.4/5
- Reviews
- 166
- Age
- 7mo ago
DORITRON Cal King Box Spring 7 Inch 3000lbs Heavy Duty Box Spring California King Bed Base Metal Mattress Foundation Easy Assembly Noise Free
- Price
- $103.31
- Rating
- 4.4/5
- Reviews
- 166
- Age
- 7mo ago
Tyndall Box Spring King Bed Base 7 Inch High Metal King Size Box Spring Only Heavy Duty Mattress Foundation with Fabric Cover Easy Assembly Quiet Noise Free Black
- Price
- $73.59
- Rating
- 4.4/5
- Reviews
- 104
- Age
- 6mo ago
Newest
by launch dateTyndall Box Spring King Bed Base 7 Inch High Metal King Size Box Spring Only Heavy Duty Mattress Foundation with Fabric Cover Easy Assembly Quiet Noise Free Black
- Price
- $73.59
- Rating
- 4.4/5
- Reviews
- 104
- Age
- 6mo ago
Beautyrest Standard Cal King Mattress Foundation
- Price
- $122.07
- Rating
- 4.2/5
- Reviews
- 11
- Age
- 7mo ago
DORITRON California King Box Spring 9 Inch 3000lbs Heavy Duty Cal King Box Spring Bed Base Metal Mattress Foundation Easy Assembly Noise Free
- Price
- $105.57
- Rating
- 4.4/5
- Reviews
- 166
- Age
- 7mo ago
DORITRON Cal King Box Spring 7 Inch 3000lbs Heavy Duty Box Spring California King Bed Base Metal Mattress Foundation Easy Assembly Noise Free
- Price
- $103.31
- Rating
- 4.4/5
- Reviews
- 166
- Age
- 7mo ago
DORITRON 5 Inch California King Box Spring Only 3000lbs Heavy Duty Cali King Box Spring Bed Base Metal Mattress Foundation Easy Assembly Noise Free
- Price
- $98.25
- Rating
- 4.4/5
- Reviews
- 166
- Age
- 7mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 50% of clicks. Leaders hold, but buyers still shop past them.
Brands
17 rising
Sellers
20
Est. top-5 brand share
66%
Top 20: 100%
Est. top-5 click share
50%
Top 20: 94%
Open market
28%
- Amazon Basics23%
- MAF15%
- Snaye14%
- DORITRON8%
- Zinus7%
- RLDVAY6%
Demand
California King Box Spring search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.2×
Search terms
Top California King Box Spring search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- california king box spring61K/yr
- cal king box spring27K/yr
- california king box spring only21K/yr
- box spring california king12K/yr
- cali king box spring9K/yr
- cal king box spring only9K/yr
- box spring for california king bed5K/yr
Reviews and returns
What reviews say buyers love and hate about California King Box Spring
We read the reviews and the return reasons for every product selling here.
“I spent 45 minutes trying to convince two parts to align”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
18 topics
Keep looking
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Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common California King Box Spring questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data