---
title: "Black King Size Pillow Cases — $60K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/black-king-size-pillow-cases"
last_updated: "2026-08-09T15:07:17.821Z"
locale: en
meta:
description: "Niche score 33/100 · $60K/yr market · 47K searches/yr · $9.78 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 33/100 · $60K/yr market · 47K searches/yr · $9.78 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Black King Size Pillow Cases — $60K/yr Amazon US Niche (2026) - Flapen"
---
# **black king size pillow cases**
**Skip it**
A deep review moat (79,410 avg reviews) — this niche doesn't clear our bar today.
Market size 15Growth 22Conversion 96Competition 11Returns 90Price range 0Avg price 31Brand share 30Review moat 0Quality gap 25
**Conversion**
**Incredible****12.9%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****1.2%**
return rate — above 5% kills the launch gate
**Avg price**
**Okay****$9.78**
avg listing price — sweet spot $15–$100
**Brand share**
**Okay****87%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-6.1%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$60K**
$60K/yr · 47K searches
**Competition**
**Bad****87%**
top-5 click share — a locked-up shelf
**Review moat**
**Bad****79,410.38**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Bad****$6.07–$14.31**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, black king size pillow cases is a $60K/yr Amazon United States market (47K searches/yr). The top 5 brands hold 87% of demand. Verdict: Skip it — 33/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **black king size pillow cases market data**
- **Units sold / yr**
- **6K–8K**
- avg 1,000–1,250/product
- **Revenue / yr**
- **$59K–$78K**
- units × avg price
- **Conversion rate**
- **12.9%**
- **Avg BSR**
- **#57**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **75%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **56 months**
- **Avg seller age**
- **197 days**
## **Competition & brand share**
The top 5 products capture 87% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **▲rising
**Sellers**
**13**
**Top-5 brand share**
**87%**
Top 20: 100%
**Top-5 click share**
**87%**
Top 20: 100%
**Open market**
**8%**
- NTBAY57% - FLXXIE9% - Utopia Bedding8% - CGK Unlimited7% - ROYALE LINENS5% - Amazon Basics5% - Open — no brand owns it (2 brands, 8%)
## **Demand & seasonality**
Weekly Amazon search volume, last 101 weeks — -6.1% search growth over the last 90 days.
1K800Prime Day '25Spike '26 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/black-king-size-pillow-cases/trend)
## **Top black king size pillow cases search terms**
- **black king pillow cases set of 2**11K/yr+1.1%11.6% conv. - **black king size pillow cases**10K/yr+10.2%10.8% conv. - **black king size pillow cases set of 2**7K/yr-16.3%14.9% conv. - **black king pillow cases**9K/yr-36.7%10.6% conv. - **king size black pillow cases**4K/yr+37.6%11.4% conv. - **black pillow cases king**3K/yr+14.4%11.8% conv. - **black pillow cases set of 2 king**3K/yr-34.6%11.8% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/black-king-size-pillow-cases/search-terms)
## **Top black king size pillow cases 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.
0%15%$9K30%$18K45%$27K60%$36K1K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 8 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**NTBAY King Pillowcase Set - 2 Pack Brushed Microfiber 20x36 Pillowcases - Soft Wrinkle-Free Fade-Resistant Stain-Resistant Black Pillowcases with Envelope Closure - 20x36 Inches Black**NTBAY**$9.41**4.6★112,791 rev](https://www.amazon.com/dp/B07H2X711R) [2**FLXXIE King Pillow Cases Set of 2 Soft Microfiber Pillow Covers with Envelope Closure Wrinkle Fade and Stain Resistant Pillowcases 20x36 Black**FLXXIE**$9.66**4.6★60,571 rev](https://www.amazon.com/dp/B07MJV5YPN) [3**Utopia Bedding King Pillow Cases - 4 Pack - Envelope Closure - Soft Brushed Microfiber Fabric - Shrinkage and Fade Resistant Pillow Covers King Size 20 X 40 Inches (King Black)**Utopia Bedding**$11.35**4.6★72,553 rev](https://www.amazon.com/dp/B07RYTSVLP) [4**King Pillow Cases Set of 2 - Ultra Soft Hotel Quality Pillowcase Covers - Comfy Cozy & Wrinkle Free - Shrinkage Stain and Fade Resistant - Machine Washable Pillow Protectors - 2 Piece Set - Black**CGK Unlimited**$14.31**4.6★57,433 rev](https://www.amazon.com/dp/B07BH6BNKR) [5**Royale Linens King Pillowcase Set of 2 - Bed Pillow Cover - 20 x 40 -Black Pillowcases - 1800 Brushed Microfiber Wrinkle & Fade Resistant - Soft & Cozy- King Size Pillow Case (Black)**ROYALE LINENS**$7.67**4.6★1,285 rev](https://www.amazon.com/dp/B08VHZJMCP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**MINIPANDA Black King Size Pillow Cases Set of 4 Envelope Design Pillowcase**MINIPANDA**$9.65**1,898 rev1y ago](https://www.amazon.com/dp/B0DS5R2BRP) [**Royale Linens King Pillowcase Set of 2 - Bed Pillow Cover - 20 x 40 -Black Pillowcases - 1800 Brushed Microfiber Wrinkle & Fade Resistant - Soft & Cozy- King Size Pillow Case (Black)**ROYALE LINENS**$7.67**1,285 rev5y ago](https://www.amazon.com/dp/B08VHZJMCP) [**Utopia Bedding King Pillow Cases - 4 Pack - Envelope Closure - Soft Brushed Microfiber Fabric - Shrinkage and Fade Resistant Pillow Covers King Size 20 X 40 Inches (King Black)**Utopia Bedding**$11.35**72,553 rev6y ago](https://www.amazon.com/dp/B07RYTSVLP) [**Bedsure King Size Satin Pillowcase Set of 2 - Black Silky Pillow Cases for Hair and Skin with Envelope Closure Similar to Silk Pillow Cases Gifts for Women Men 20x36 Inches 2pcs**Bedsure**$10.16**319,945 rev7y ago](https://www.amazon.com/dp/B07Q6WCH34) [**FLXXIE King Pillow Cases Set of 2 Soft Microfiber Pillow Covers with Envelope Closure Wrinkle Fade and Stain Resistant Pillowcases 20x36 Black**FLXXIE**$9.66**60,571 rev7y ago](https://www.amazon.com/dp/B07MJV5YPN)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Royale Linens King Pillowcase Set of 2 - Bed Pillow Cover - 20 x 40 -Black Pillowcases - 1800 Brushed Microfiber Wrinkle & Fade Resistant - Soft & Cozy- King Size Pillow Case (Black)**ROYALE LINENS**$7.67**4.6★**▲ 189%**](https://www.amazon.com/dp/B08VHZJMCP) [**MINIPANDA Black King Size Pillow Cases Set of 4 Envelope Design Pillowcase**MINIPANDA**$9.65**4.6★**▲ 183%**](https://www.amazon.com/dp/B0DS5R2BRP) [**King Pillow Cases Set of 2 - Ultra Soft Hotel Quality Pillowcase Covers - Comfy Cozy & Wrinkle Free - Shrinkage Stain and Fade Resistant - Machine Washable Pillow Protectors - 2 Piece Set - Black**CGK Unlimited**$14.31**4.6★**▲ 34%**](https://www.amazon.com/dp/B07BH6BNKR) [**Amazon Basics Standard Pillowcases Set of 2 - Lightweight Super Soft Easy Care Microfiber Black 30 L x 20 W Pillows Not Included**Amazon Basics**$6.07**4.7★**— 4%**](https://www.amazon.com/dp/B07B4YQFGX) [**NTBAY King Pillowcase Set - 2 Pack Brushed Microfiber 20x36 Pillowcases - Soft Wrinkle-Free Fade-Resistant Stain-Resistant Black Pillowcases with Envelope Closure - 20x36 Inches Black**NTBAY**$9.41**4.6★**— 3%**](https://www.amazon.com/dp/B07H2X711R)
**~~View all trending →~~**
## **What buyers say about black king size pillow cases**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Soft Feel**19%
*“Soft and smooth”*
**Quality-Overall**11%
*“Amazon Basics Standard Pillow Cases: Seems like a very good quality”*
**Size-Overall**10%
*“Fit well”*
**Comfort-Overall**9%
*“very comfortable”*
**Cushion**8%
*“the envelope closure keeps the pillow in place nicely”*
**Value For Money**8%
*“Good deal”*
**Color**5%
*“So, many lovely colors”*
**Advertised Vs Actual Product**4%
*“is as advertised”*
**Material Quality**3%
*“Great material”*
**Foam**2%
*“Great sheets, very comfy to sleep on”*
### **What buyers complain about **
**Color**19%
*“Do not buy the dark colors”*
**Size-Overall**12%
*“Awful not a queen size”*
**Quality-Overall**12%
*“Bad quality”*
**Thickness**6%
*“Their a little thin”*
**Durability**5%
*“it does not come off”*
**Stitch/Finish/Polish**5%
*“Low quality stitching”*
**Material Quality**3%
*“Not super great material”*
**Soft Feel**3%
*“Not as soft as some satins”*
**Comfort-Overall**3%
*“Pillows flat, not comfortable”*
**Grip**3%
*“Slide off”*
### **Top return reasons **
**Size-Overall**35%
**Material Quality**20%
**Color**12%
**Cushion**6%
**Quality-Overall**5%
**Advertised Vs Actual Product**4%
**Soft Feel**3%
**Thin**3%
**Value For Money**2%
**Hard Feel**2%
## **Common questions**
- **Is black king size pillow cases profitable to sell on Amazon United States?**
- The niche generates $60K/yr across 8 tracked products. 90-day search growth is -6.1%. Flapen's verdict: Skip it (33/100).
- **How competitive is the black king size pillow cases niche?**
- 8 brands and 13 sellers compete. The top 5 products take 87% of clicks and top 5 brands hold 87% of demand.
- **What do buyers complain about in black king size pillow cases?**
- Top complaints mined from reviews: Color, Size-Overall, Quality-Overall. The return rate is 1.2%.
- **When does demand for black king size pillow cases peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the black king size pillow cases niche?**
- Listings span $6.07–$14.31; the average listing price is $9.78 (sweet spot $15–$100). The average incumbent carries 79,410 reviews — the moat a new listing must climb.
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