--- title: "Is King Pillow Cases 4 Pack Worth Selling on Amazon US?" canonical_url: "https://flapen.com/research/us/home-kitchen/king-pillow-cases-4-pack" last_updated: "2026-09-18T19:39:10.995Z" locale: en meta: description: "King Pillow Cases 4 Pack Amazon US estimated sales data: $12,800/month, -3.2% growth. Worth selling? See the verdict." "og:description": "King Pillow Cases 4 Pack Amazon US estimated sales data: $12,800/month, -3.2% growth. Worth selling? See the verdict." "og:title": "Is King Pillow Cases 4 Pack Worth Selling on Amazon US?" --- OverviewNichesProductsSearch terms Flapen Score ## King Pillow Cases 4 Pack against its category The dotted line is the Home & Kitchen average. Past it, King Pillow Cases 4 Pack is stronger. Inside it, weaker.Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality GapThis niche Category average [**See the method **](https://flapen.com/science) Market ## The King Pillow Cases 4 Pack market on Amazon at a glance Shoppers on Amazon United States searched for King Pillow Cases 4 Pack 156K times last year and spent an estimated $154K. The top 5 brands take 91% of clicks. Flapen scores it 39 out of 100, a Fail. 01 · Demand ### An estimated 6.2% of those searches ended in a purchase. Shoppers searched for this 156K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 6.2% of those searches ended in a purchase. Searches in the last 90 days moved -3.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated $154K a year.
Searches, last 12 months
156K
Growth, 90 days vs prior 90
-3.2%
Conversion, latest week
6.2%
Market size, estimated
$154Ka year
Peak month
July1.5× the quietest month
Top search term
king pillow cases set of 440K searches a year
02 · Price ### A sale here is worth $15.89. Listings sell for $15.89 on average, from $6.57 to $36.64. Amazon reports units sold in ranges. This niche sold 10K to 13K a year. The average listing sells 500 to 750 of them. At $15.89 that is $8K to $12K a year per listing.
Average price
$15.89inside the $15 to $100 sweet spot
Price range
$6.57–$36.64
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
10K–13K
Units per listing a year
500–750
Revenue per listing a year
$8K–$12K
Returns
1.5%of orders · Amazon United States median 2.1%
03 · Entry bar ### The bar here is reviews. 85% 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 #52 within Sheets & Pillowcases. It carries 44,019 reviews at 4.56 stars, so a new listing needs social proof before a better product.
Sponsored listings
85%
Prime listings
100%
Out of stock, average day
0.0%
Average rank
#52in Sheets & Pillowcases
Average rating
4.56 starsAmazon United States average 4.42 stars
Average reviews
44,019per listing
Listings tracked
13
04 · Newcomers ### Brands here are settling in. The brands on the shelf have sold for 55 months on average, so the names here are settling in.
Launched, last 12 months
0
Successful launches
0Amazon's first-year sales bar
Average brand age
55 months
Products ## Top King Pillow Cases 4 Pack products & what they sell for Every tracked product: its share of the shelf, its reviews, and its price.**Sign in to see the products** The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone. [Sign in](https://flapen.com/auth/login) Competition ## Competition: brands, sellers & click share The top 5 products take 79% of clicks. A locked shelf that new listings rarely crack. Brands**9 **▼falling Sellers**12** Top-5 brand share**91%** Top 20: 100% Top-5 click share**79%** Top 20: 100% Open market**6%**- Brand 145% - Brand 235% - Brand 34% - Brand 44% - Brand 53% - Brand 63% - Open — no brand owns it (3 brands, 6%) Demand ## King Pillow Cases 4 Pack search demand Weekly searches over the year, seasonality beneath. Pick a range.3M6M1YAll4K3KPrime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay No pronounced peak months · busiest ÷ quietest = 1.5× Search terms ## Top King Pillow Cases 4 Pack search terms shoppers use The exact words shoppers type, with yearly volume, growth, and conversion.90D1Y - **king pillow cases set of 4**40K/yr+34.6%5.7% conv. - **oversized pillow cases**26K/yr-2.7%0.7% conv. - **pillow cases king size set of 4**9K/yr+14.5%4.4% conv. - **king size pillow case with zipper**12K/yr-27.7%0.0% conv. - **king pillowcases set of 4**9K/yr-12.7%5.1% conv. - **king size pillows cases set of 4**8K/yr-11.0%3.8% conv. - **king size pillowcases set of 4**7K/yr+16.4%4.3% conv. - **king pillows cases set of 4**4K/yr-36.4%6.4% conv. - **xl pillow case**3K/yr+19.8%1.6% conv. - **pillow case king size set of 4**3K/yr+18.7%4.1% conv. Reviews and returns ## What reviews say buyers love and hate about King Pillow Cases 4 Pack We read the reviews and the return reasons for every product selling here.**23%**of positive reviews mention “Soft Feel”**21%**of negative reviews mention “Size-Overall”**1.5%**of orders come back > **“Big is REALLY Big” **_A buyer, on “Size-Overall”21% of negative reviews mention the same topic_ 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. 17 topics**Negative****Positive****Size-Overall**−0.0521%12%38% of returns“Big is REALLY Big”**Quality-Overall**+0.147%16%3% of returns“The quality is as good as more costly cases”**Soft Feel**—23%1% of returns“Soft to the touch”**Color**−0.028%3%20% of returns“Its almost off-white”**Thickness**−0.0612%“Poor quality and very thin material”**Value For Money**+0.822%8%2% of returns“Great price for 4”**Cushion**−0.023%4%4% of returns“Great king pillowcases”**Washability**−0.044%2%“Fell apart and ripped at the same after one wash”**Comfort-Overall**+0.676%“Very comfortable”**Smell**−0.054%“Smelly fish”**Upholstery/Fabric Quality**−0.023%“The fabric is breathable”**Material Quality**−0.013%12% of returns“Plastic”**Ease Of Use**+0.273%“Very convenient”**Stitch/Finish/Polish**−0.012%“Only reason Im not giving 5 stars is the stitching on one of them looks a little uneven up close”**Advertised Vs Actual Product**—6% of returnsReturn reason only. No review mentions it.**Thin**—4% of returnsReturn reason only. No review mentions it.**Display Colors**—2% of returnsReturn reason only. No review mentions it.Expand all rows Keep looking ## Related niches Niches in the same category that score near this one. Research these next. [All Home & Kitchen niches](https://flapen.com/research/us/home-kitchen/niches) [

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