down pillow inserts 18 x 18
Skip itA deep review moat (23,190 avg reviews) — this niche doesn't clear our bar today.
Conversion
Incredible13.2%search→purchase rate — share of searches ending in a sale
Avg price
Incredible$25.57avg listing price — sweet spot $15–$100
Price range
Incredible$16.07–$37.97cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great1.4%return rate — above 5% kills the launch gate
Growth
Okay+11.3%90-day search growth — must beat 0% to launch
Market size
Okay$147K$147K/yr · 43K searches
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Competition
Bad71%top-5 click share — a locked-up shelf
Brand share
Bad91%top-5 brand share — brand-locked demand
Review moat
Bad23,190.18avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, down pillow inserts 18 x 18 is a $147K/yr Amazon United States market (43K searches/yr). The top 5 brands hold 91% of demand. Demand peaks in Aug. Verdict: Skip it — 48/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
down pillow inserts 18 x 18 market data
- Units sold / yr
- 6K–8K
- avg 500–750/product
- Revenue / yr
- $153K–$205K
- units × avg price
- Conversion rate
- 13.2%
- Avg BSR
- #46
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 51 months
- Avg seller age
- 202 days
Competition & brand share
The top 5 products capture 71% of clicks — a locked-up shelf that new listings rarely crack.Brands
9 rising
Sellers
15
Top-5 brand share
91%
Top 20: 100%
Top-5 click share
71%
Top 20: 100%
Open market
5%
- MIULEE50%
- basic home21%
- HOMESJUN7%
- puredown7%
- Utopia Bedding6%
- ComfyDown4%
- Open — no brand owns it (3 brands, 5%)
Demand & seasonality
Weekly Amazon search volume, last 98 weeks — +11.3% search growth over the last 90 days.Peak months: Aug · busiest ÷ quietest = 2.1×
Top down pillow inserts 18 x 18 search terms
- 18x18 down pillow inserts12K/yr
- down pillow inserts 18x188K/yr
- 18x18 pillow inserts down5K/yr
- 18x18 feather pillow inserts5K/yr
- feather pillow inserts 18x183K/yr
- 18 x 18 down pillow insert4K/yr
- 18x18 down pillow inserts set of 23K/yr
- 18x18 pillow inserts down feather3K/yr
Top down pillow inserts 18 x 18 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 17 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
basic home Hotel-Style 18x18 Goose Feather Pillow Insert for Sofa & Bed - 100% Odorless & Plump Cushion Filler - 233TC Cotton with Inner Liner to Prevent Poking (18x18 Inch)
basic home$24.424.5★12,246 rev
MIULEE 18x18 Pillow Inserts Premium Feather and Down Pillows Pack of 4
MIULEE$31.834.6★183 rev
MIULEE 18x18 Feather Down Pillow Inserts Set of 2 Fluffy for Chop Look
MIULEE$25.964.7★449 rev
MIULEE 18x18 Pillow Inserts Set of 2 Feather Down Throw Pillows
MIULEE$25.804.6★2,247 rev
HOMESJUN Throw Couch Pillows Inserts Set of 2 Down Feather Pillows Inserts Bed and Cotton Cover 18x18 Inches
HOMESJUN$23.814.5★886 rev
Newest
by launch dateMIULEE 18x18 Pillow Inserts Premium Feather and Down Pillows Pack of 4
MIULEE$31.83183 rev
MIULEE Feather and Down 18x18 Inch Throw Pillow Insert for Sofa Bed Couch
MIULEE$17.34366 rev
BPC Luxury Feather Down 18x18 Pillow Inserts Set of 2 Soft Fluffy Throw Pillow Inserts 100% Organic Cotton Cover Square Pillows for Couch Living Room Bed Sofa
BPC$37.9757 rev
MIULEE 18x18 Pillows Inserts Pack of 4 Down Alternative Virgin Filling
MIULEE$20.95532 rev
puredown 18x18 Throw Pillow Inserts Set of 2 Supportive & Fluffy Down Alternative Pillow Forms for Couch Sofa & Bed Indoor Decorative Cushion Stuffer
puredown$18.82133 rev
Trending
90-day click momentumBPC Luxury Feather Down 18x18 Pillow Inserts Set of 2 Soft Fluffy Throw Pillow Inserts 100% Organic Cotton Cover Square Pillows for Couch Living Room Bed Sofa
BPC$37.974.4★
MIULEE 18x18 Pillow Inserts Premium Feather and Down Pillows Pack of 4
MIULEE$31.834.6★
MIULEE Feather and Down 18x18 Inch Throw Pillow Insert for Sofa Bed Couch
MIULEE$17.344.5★
MIULEE 18x18 Pillows Inserts Pack of 4 Down Alternative Virgin Filling
MIULEE$20.954.8★
Utopia Bedding 18x18 Pillow Inserts White Throw Pillows for Couch 2 Pack
Utopia Bedding$16.074.6★
What buyers say about down pillow inserts 18 x 18
What buyers praise and complain about, mined from review topics.What buyers love
“Quality and great chop”
“Fluffy and soft”
“Extremely soft”
“The cushion is not bad”
“Perfect fit”
“Money well spent”
“Nice, comfortable”
“As advertised”
“Fantastic pillow”
“These inserts are nice and thick”
What buyers complain about
“Not full and fluffy”
“It almost looks like an extra thin small child sitting in a large coat lol I dont know how else to describe them except that they are half the full fullness you think that you would need to fill the pillowcase”
“It doesn't fit”
“They just dont seem to be well made”
“CHEMICAL SMELL”
“Not as advertised”
“its not very padded”
“can't shape it”
“not worth it”
“not at all soft”
Top return reasons
Common questions
- Is down pillow inserts 18 x 18 profitable to sell on Amazon United States?
- The niche generates $147K/yr across 17 tracked products. 4 of 5 products launched in the last 360 days are still selling. 90-day search growth is +11.3%. Flapen's verdict: Skip it (48/100).
- How competitive is the down pillow inserts 18 x 18 niche?
- 9 brands and 15 sellers compete. The top 5 products take 71% of clicks and top 5 brands hold 91% of demand.
- What do buyers complain about in down pillow inserts 18 x 18?
- Top complaints mined from reviews: Fluffiness, Thickness, Size-Overall. The return rate is 1.4%.
- When does demand for down pillow inserts 18 x 18 peak?
- Demand peaks in Aug; the busiest month runs 2.1× the quietest.
- What does it cost to enter the down pillow inserts 18 x 18 niche?
- Listings span $16.07–$37.97; the average listing price is $25.57 (sweet spot $15–$100). The average incumbent carries 23,190 reviews — the moat a new listing must climb.