king size pillow cases
Skip itA small market ($46K/yr) — this niche doesn't clear our bar today.
Returns
Great1.0%return rate — above 5% kills the launch gate
Competition
Good50%top-5 click share — leaders hold, buyers still browse
Brand share
Good72%top-5 brand share — brands hold most of the demand
Conversion
Okay3.7%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Price range
Okay£4.56–£19.85cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Okay£9.50avg listing price — sweet spot $15–$100
Review moat
Bad17,899.28avg incumbent reviews — the moat a new listing must climb
Growth
Bad-26.5%90-day search growth — must beat 0% to launch
Market size
Bad£46K£46K/yr · 131K searches
According to Flapen's Amazon United Kingdom niche tracking, king size pillow cases is a £46K/yr Amazon United Kingdom market (131K searches/yr). The top 5 brands hold 72% of demand. Verdict: Skip it — 40/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
king size pillow cases market data
- Units sold / yr
- 5K–6K
- avg 100–250/product
- Revenue / yr
- £48K–£57K
- units × avg price
- Conversion rate
- 3.7%
- Avg BSR
- #94
- Page quality
- 0%
- Prime
- 93%
- Sponsored
- 76%
- Out of stock
- 10.1%
- Avg brand age
- 57 months
- Avg seller age
- 187 days
Competition & brand share
The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.Brands
17 falling
Sellers
20
Top-5 brand share
72%
Top 20: 100%
Top-5 click share
50%
Top 20: 92%
Open market
24%
- CGK Unlimited37%
- NTBAY22%
- Lirex5%
- Ethel May5%
- Comfort Beddings4%
- Utopia Bedding4%
Demand & seasonality
Weekly Amazon search volume, last 85 weeks — -26.5% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top king size pillow cases search terms
- extra large pillow cases31K/yr
- king size pillow cases29K/yr
- large pillow cases 2 pack14K/yr
- king size pillow cases 2 pack6K/yr
- 50 x 90 pillow case7K/yr
- kingsize pillow cases6K/yr
- extra large pillow cases 70 x 90 cotton5K/yr
- king pillow cases6K/yr
- extra large pillow case6K/yr
- 50x90 pillow cases6K/yr
Top 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
CGK 2 Pack King Size White Pillow Cases Set 50x90 cm with Envelope Closure - Brushed Microfiber - Soft Wrinkle & Fade Resistant - Breathable Hypoallergenic & OEKO-TEX Standard 100 Certified
CGK Unlimited£7.034.5★2,927 rev
CGK 2 Pack King Size Light Grey Pillow Cases 50x90 cm with Envelope Closure - Brushed Microfiber - Soft Wrinkle & Fade Resistant - Breathable Hypoallergenic & OEKO-TEX Standard 100 Certified
CGK Unlimited£7.034.5★2,927 rev
NTBAY 2 Pack 500 Thread Count 100% Egyptian Cotton Pillowcases Super Soft Cozy and Breathable Envelope Closure King Pillow Cases 50x90 cm White
NTBAY£14.714.5★12,809 rev
CGK 4 Pack King Size White Pillow Cases Set 50x90 cm with Envelope Closure - Brushed Microfiber - Soft Wrinkle & Fade Resistant - Breathable Hypoallergenic & OEKO-TEX Standard 100 Certified
CGK Unlimited£9.534.5★2,927 rev
NTBAY 2 Pack 100% Brushed Microfiber Plain Pillowcases 1800 Super Soft and Cozy Wrinkle Fade Stain Resistant with Envelope Closure Bed Pillow Cases 50x90 cm White
NTBAY£7.984.6★106,576 rev
Newest
by launch date
LYMA Pillow Cases Pack of 2 & 4 Ultra Soft Breathable Housewife & Oxford Cover OEKO-TEX Certified Nanoplush Double Brushed Quick Dry Pillowcases Envelope Closure Wrinkle Fade Resistant 50x75 CM
LYMA£6.51384 rev
LYMA Pillow Cases Pack of 2 & 4 Ultra Soft Breathable Housewife & Oxford Cover OEKO-TEX Certified Nanoplush Double Brushed Quick Dry Pillowcases Envelope Closure Wrinkle Fade Resistant 50x75 CM
LYMA£6.52384 rev
Casa Platino 4 Pack Pillow Cases - King Size 50x90 cm - Pre-Washed 100% Brushed Microfiber with Envelope Closure Wrinkle Resistant and Soft - Silver
Casa Platino£7.93519 rev
CGK 2 Pack King Size White Pillow Cases Set 50x90 cm with Envelope Closure - Brushed Microfiber - Soft Wrinkle & Fade Resistant - Breathable Hypoallergenic & OEKO-TEX Standard 100 Certified
CGK Unlimited£7.032,927 rev
CGK 2 Pack King Size Light Grey Pillow Cases 50x90 cm with Envelope Closure - Brushed Microfiber - Soft Wrinkle & Fade Resistant - Breathable Hypoallergenic & OEKO-TEX Standard 100 Certified
CGK Unlimited£7.032,927 rev
Trending
90-day click momentumLYMA Pillow Cases Pack of 2 & 4 Ultra Soft Breathable Housewife & Oxford Cover OEKO-TEX Certified Nanoplush Double Brushed Quick Dry Pillowcases Envelope Closure Wrinkle Fade Resistant 50x75 CM
LYMA£6.514.6★
Lirex Extra Large Pillow Cases 2 Pack 1800 Thread Count Embroidered Soft Brushed Microfiber Pillowcases Blue
Lirex£8.494.4★
CGK 2 Pack King Size Light Grey Pillow Cases 50x90 cm with Envelope Closure - Brushed Microfiber - Soft Wrinkle & Fade Resistant - Breathable Hypoallergenic & OEKO-TEX Standard 100 Certified
CGK Unlimited£7.034.5★
LYMA Pillow Cases Pack of 2 & 4 Ultra Soft Breathable Housewife & Oxford Cover OEKO-TEX Certified Nanoplush Double Brushed Quick Dry Pillowcases Envelope Closure Wrinkle Fade Resistant 50x75 CM
LYMA£6.524.6★
Mirha Extra Large Pillow Case Pair 100% Egyptian Cotton White - 50CM X 90CM +15CM
MIRHA£7.334.4★
What buyers say about king size pillow cases
What buyers praise and complain about, mined from review topics.What buyers love
“This bedding is of a very good quality”
“Soft cotton”
“Fit good”
“Fair Price”
“So comfortable”
“Nice material and feel comfortable to sleep on”
“comfortable pillow cases”
“Exactly as described”
“The cotton feels nice enough”
“easy to wash”
What buyers complain about
“Too narrow”
“they are not very thick”
“Not great quality”
“Cheap fabric”
“Very thin”
“I just wish they had a choice of colours though”
“Not worth the money”
“Not as expected”
“Not soft”
“Was expecting a slightly softer pillow”
Top return reasons
Common questions
- Is king size pillow cases profitable to sell on Amazon United Kingdom?
- The niche generates £46K/yr across 29 tracked products. 90-day search growth is -26.5%. Flapen's verdict: Skip it (40/100).
- How competitive is the king size pillow cases niche?
- 17 brands and 20 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 72% of demand.
- What do buyers complain about in king size pillow cases?
- Top complaints mined from reviews: Size-Overall, Thickness, Quality-Overall. The return rate is 1.0%.
- When does demand for king size pillow cases peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the king size pillow cases niche?
- Listings span £4.56–£19.85; the average listing price is £9.50 (sweet spot $15–$100). The average incumbent carries 17,899 reviews — the moat a new listing must climb.