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51

extra deep fitted sheet king size cotton

Worth a look

Shows low returns (0.8%), but a small market ($69K/yr) keeps it on the watch list.

Market size 17Growth 23Conversion 55Competition 59Returns 96Price range 66Avg price 43Brand share 78Review moat 32Quality gap 60

Returns

Incredible0.8%

return rate — above 5% kills the launch gate

Brand share

Great57%

top-5 brand share — no brand owns this niche

Price range

Good£6.87–£30.95

cheapest to priciest tracked listing — scored on the share inside $15–$100

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Competition

Good50%

top-5 click share — leaders hold, buyers still browse

Conversion

Good4.5%

search→purchase rate — share of searches ending in a sale

Avg price

Okay£11.20

avg listing price — sweet spot $15–$100

Review moat

Okay3,283.07

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-3.9%

90-day search growth — must beat 0% to launch

Market size

Bad£69K

£69K/yr · 135K searches

According to Flapen's Amazon United Kingdom niche tracking, extra deep fitted sheet king size cotton is a £69K/yr Amazon United Kingdom market (135K searches/yr). The top 5 brands hold 57% of demand. Verdict: Worth a look — 51/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

extra deep fitted sheet king size cotton market data

Units sold / yr
6K–8K
avg 100–250/product
Revenue / yr
£67K–£90K
units × avg price
Conversion rate
4.5%
Avg BSR
#36
Page quality
0%
Prime
86%
Sponsored
100%
Out of stock
3.3%
Avg brand age
53 months
Avg seller age
184 days

Competition & brand share

The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.

Brands

21 falling

Sellers

24

Top-5 brand share

57%

Top 20: 100%

Top-5 click share

50%

Top 20: 90%

Open market

37%

  • Filo Magico21%
  • funky gadgets11%
  • MOONLIGHT200159%
  • My home store8%
  • Aisbo7%
  • Bedsure6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -3.9% search growth over the last 90 days.
4K3KSpike '24Prime Day '25Spike '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Top extra deep fitted sheet king size cotton search terms

  • extra deep fitted sheet king size cotton105K/yr
  • cotton sheets king size16K/yr
  • king size fitted sheets egyptian cotton10K/yr
  • bed sheets king size cotton4K/yr
All search terms

Top extra deep fitted sheet king size cotton 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%5%£3K10%£7K15%£10K20%£14K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

What buyers say about extra deep fitted sheet king size cotton

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall25%

“Excellent quality bedding”

Size-Overall25%

“Easy to fit”

Soft Feel9%

“Very smooth and comfortable”

Value For Money9%

“not expensive”

Comfort-Overall8%

“And comfortable”

Upholstery/Fabric Quality3%

“Good quality cotton sheets”

Material Quality3%

“Beautiful material”

Washability2%

“comfortable even after washing”

Thickness2%

“Lovely and thick”

Advertised Vs Actual Product2%

“As advertised”

What buyers complain about

Size-Overall20%

“Does not fit”

Quality-Overall17%

“The sheet itself was poor quality”

Material Quality6%

“Cheap and shoddy material”

Hard Feel6%

“Not very soft”

Advertised Vs Actual Product5%

“does not resemble the images or description remotely”

Smell4%

“They had a chemical smell on unwrapping”

Value For Money4%

“I thought the price was a little too high”

Stretchability/Expandability/Elasticity3%

“elasticity very tight round matters”

Thickness3%

“Not as thick as I thought it was”

Durability3%

“One wash and it has bobbled, not impressed at all”

Top return reasons

Size-Overall42%
Quality-Overall12%
Material Quality11%
Color10%
Thin5%
Advertised Vs Actual Product2%
Stain Resistance2%
Hard Feel2%
Thickness2%
Smell2%

Common questions

Is extra deep fitted sheet king size cotton profitable to sell on Amazon United Kingdom?
The niche generates £69K/yr across 28 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -3.9%. Flapen's verdict: Worth a look (51/100).
How competitive is the extra deep fitted sheet king size cotton niche?
21 brands and 24 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 57% of demand.
What do buyers complain about in extra deep fitted sheet king size cotton?
Top complaints mined from reviews: Size-Overall, Quality-Overall, Material Quality. The return rate is 0.8%.
When does demand for extra deep fitted sheet king size cotton peak?
Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the extra deep fitted sheet king size cotton niche?
Listings span £6.87–£30.95; the average listing price is £11.20 (sweet spot $15–$100). The average incumbent carries 3,283 reviews — the moat a new listing must climb.