Duvet Filler King
FailThe average product has 31,216 reviews to catch up to, so Duvet Filler King is a Fail.
- Flapen Score
- 47 / 100Ranks 6,404 of 11,240 Home & Kitchen niches · −2 vs the category median of 4947
- Market size
- $112K/yr35K searches / yr
- 90-day growth
- +1.0%search demand this quarter
- Competition
- 52%top-5 click share · 15 brands · 22 sellers
Flapen Score
Duvet Filler King against its category
The dotted line is the Home & Kitchen average. Past it, Duvet Filler King is stronger. Inside it, weaker.
Market
The Duvet Filler King market on Amazon at a glance
Shoppers on Amazon United States searched for Duvet Filler King 35K times last year and spent an estimated $112K. The top 5 brands take 76% of clicks. Flapen scores it 47 out of 100, a Fail.
01 · Demand
An estimated 5.6% of those searches ended in a purchase.
Shoppers searched for this 35K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 5.6% of those searches ended in a purchase. Searches in the last 90 days moved +1.0% against the 90 days before. Searches, conversion and average price together put the market at an estimated $112K a year.
- Searches, last 12 months
- 35K
- Growth, 90 days vs prior 90
- +1.0%
- Conversion, latest week
- 5.6%
- Market size, estimated
- $112Ka year
- Peak month
- January1.4× the quietest month
- Top search term
- cotton duvet insert king10K searches a year
02 · Price
A sale here is worth $57.61.
Listings sell for $57.61 on average, from $26.52 to $118.65. Amazon reports units sold in ranges. This niche sold 2K to 2K a year. The average listing sells 0 to 100 of them. At $57.61 that is $0 to $6K a year per listing.
- Average price
- $57.61inside the $15 to $100 sweet spot
- Price range
- $26.52–$118.65
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 2K–2K
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$6K
- Returns
- 2.6%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads and reviews.
96% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 1.1% of listings are out of stock. The average listing ranks #49 within Comforters & Sets. It carries 31,216 reviews at 4.45 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 96%
- Prime listings
- 100%
- Out of stock, average day
- 1.1%
- Average rank
- #49in Comforters & Sets
- Average rating
- 4.45 starsAmazon United States average 4.42 stars
- Average reviews
- 31,216per listing
- Listings tracked
- 25
04 · Newcomers
5 of last year's 5 launches cleared the first-year sales bar.
5 products launched here in the last 12 months. 5 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 44 months on average, so the names here are settling in.
- Launched, last 12 months
- 5
- Successful launches
- 5Amazon's first-year sales bar
- Average brand age
- 44 months
Products
Top Duvet Filler King 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 18, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Utopia Bedding King Comforter Duvet Insert Quilted White Comforter with Corner Tabs Box Stitched Down Alternative Comforters King Size 90 x 102 inches
- Price
- $36.55
- Rating
- 4.6/5
- Reviews
- 155,712
- Age
- 12y ago

Utopia Bedding White Comforter King Size Duvet Insert Down Alternative Comforter
- Price
- $30.62
- Rating
- 4.6/5
- Reviews
- 126,713
- Age
- 9y ago

Bedsure Comforter Duvet Insert - Quilted Comforters King Size All Season Duvet GentleSoft Down Alternative Bedding Blanket with 8 Tabs Gifts for Women/Men White King 90 x 102 Inches
- Price
- $48.06
- Rating
- 4.7/5
- Reviews
- 76,760
- Age
- 6y ago

Amazon Basics White Down Alternative Comforter and Duvet Insert with Corner Tabs Machine Washable King Light White
- Price
- $26.60
- Rating
- 4.6/5
- Reviews
- 5,815
- Age
- 8y ago

HOMTEC Duvet Insert Cotton Comforter King Size White Down Alternative Fill Duvet Insert 100% Cotton Shell Quilted Fluffy Comforter Lightweight All Season 8 Corner Tabs Durable Breathable Noiseless
- Price
- $50.51
- Rating
- 4.5/5
- Reviews
- 700
- Age
- 4y ago
Trending
estimated 90-day click momentum
Feather Down Comforter King Size 100% Cotton Duvet Insert
- Price
- $53.72
- Rating
- 4.5/5
- Reviews
- 595
- Age
- 11mo ago

Ubauba King Size Down Duvet Insert - All Season Cool Touch for Hot Sleepers Premium 100% Cotton Shell Hotel Quality White 106 x 90 Inch
- Price
- $68.28
- Rating
- 4.3/5
- Reviews
- 542
- Age
- 3mo ago

Martha Stewart Luxury White Goose Feathers Down Fiber Duvet Insert King Size - Hotel Collection 100% Cotton Cover Comforter All Season Medium Warmth Breathable Hypoallergenic 106 x 90 Inch
- Price
- $79.33
- Rating
- 4.6/5
- Reviews
- 61
- Age
- 5mo ago

ACCURATEX Lightweight Duvet Insert King Cotton Shell 250GSM Fill 104x90
- Price
- $60.18
- Rating
- 4.4/5
- Reviews
- 172
- Age
- 1y ago

Cobnom Feather and Down Fibres Comforter King Size - 100% Organic Cotton Quill-Free & Ethical Luxury All Season Duvet Insert (White 106x90 Inches)
- Price
- $86.93
- Rating
- 4.4/5
- Reviews
- 346
- Age
- 1y ago
Newest
by launch date
Ubauba King Size Down Duvet Insert - All Season Cool Touch for Hot Sleepers Premium 100% Cotton Shell Hotel Quality White 106 x 90 Inch
- Price
- $68.28
- Rating
- 4.3/5
- Reviews
- 542
- Age
- 3mo ago

Martha Stewart Luxury White Goose Feathers Down Fiber Duvet Insert King Size - Hotel Collection 100% Cotton Cover Comforter All Season Medium Warmth Breathable Hypoallergenic 106 x 90 Inch
- Price
- $79.33
- Rating
- 4.6/5
- Reviews
- 61
- Age
- 5mo ago

ACCURATEX King Duvet Insert Comforter Cotton Shell 400GSM Fill 104x90
- Price
- $64.03
- Rating
- 4.5/5
- Reviews
- 235
- Age
- 9mo ago

Feather Down Comforter King Size 100% Cotton Duvet Insert
- Price
- $53.72
- Rating
- 4.5/5
- Reviews
- 595
- Age
- 11mo ago

Cobnom Feather and Down Fibres Comforter King Size - 100% Organic Cotton Quill-Free & Ethical Luxury All Season Duvet Insert (White 106x90 Inches)
- Price
- $86.93
- Rating
- 4.4/5
- Reviews
- 346
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 52% of clicks. Leaders hold, but buyers still shop past them.
Brands
15 rising
Sellers
22
Est. top-5 brand share
76%
Top 20: 100%
Est. top-5 click share
52%
Top 20: 95%
Open market
19%
- Utopia Bedding33%
- Bedsure21%
- Amazon Basics11%
- Martha Stewart6%
- HOMTEC6%
- ACCURATEX5%
Demand
Duvet Filler King search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.4×
Search terms
Top Duvet Filler King search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- cotton duvet insert king10K/yr
- king insert for duvet cover9K/yr
- duvet cover insert king5K/yr
- king comforter insert for duvet cover4K/yr
- duvet filler king5K/yr
- hypoallergenic duvet insert king1K/yr
Reviews and returns
What reviews say buyers love and hate about Duvet Filler King
We read the reviews and the return reasons for every product selling here.
“which is huge”
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
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Duvet Filler King 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









