pillow 18x18
Skip itA small market ($55K/yr) — this niche doesn't clear our bar today.
Conversion
Incredible15.6%search→purchase rate — share of searches ending in a sale
Returns
Great1.6%return rate — above 5% kills the launch gate
Avg price
Great$17.38avg listing price — sweet spot $15–$100
Price range
Good$6.89–$29.03cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Competition
Okay56%top-5 click share — leaders hold, buyers still browse
Brand share
Okay86%top-5 brand share — brands hold most of the demand
Growth
Okay+1.4%90-day search growth — must beat 0% to launch
Review moat
Bad20,815.04avg incumbent reviews — the moat a new listing must climb
Market size
Bad$55K$55K/yr · 20K searches
According to Flapen's Amazon United States niche tracking, pillow 18x18 is a $55K/yr Amazon United States market (20K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Aug–Sep–Dec. Verdict: Skip it — 48/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
pillow 18x18 market data
- Units sold / yr
- 3K–3K
- avg 100–250/product
- Revenue / yr
- $43K–$52K
- units × avg price
- Conversion rate
- 15.6%
- Avg BSR
- #47
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 96%
- Out of stock
- 0.0%
- Avg brand age
- 48 months
- Avg seller age
- 200 days
Competition & brand share
The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them.Brands
12 falling
Sellers
18
Top-5 brand share
86%
Top 20: 100%
Top-5 click share
56%
Top 20: 94%
Open market
11%
- MIULEE35%
- Utopia Bedding20%
- EDOW18%
- Phantoscope7%
- QUBA LINEN6%
- LANE LINEN3%
- Open — no brand owns it (6 brands, 11%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +1.4% search growth over the last 90 days.Peak months: Aug, Sep, Dec · busiest ÷ quietest = 6.5×
Top pillow 18x18 search terms
- 18 inch pillows8K/yr
- square pillows 18x187K/yr
- 18x19 pillow insert3K/yr
- 18x18 inch pillow2K/yr
Top pillow 18x18 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
MIULEE 18x18 Throw Pillows Inserts 2 Pack Decorative Pillows for Couch Bed
MIULEE$13.534.6★4,072 rev
Utopia Bedding 18x18 Pillow Inserts White Throw Pillows for Couch 2 Pack
Utopia Bedding$16.074.6★217,964 rev
MIULEE 18x18 Pillow Inserts 4 Pack 100% Virgin Fiber Filling Throw Pillows
MIULEE$19.734.7★1,616 rev
EDOW Throw Pillow Insert LightweightSoft Polyester Down Alternative Decorative Pillow Sham Stuffer Machine Washable. (White 18x18)
EDOW$7.904.2★25,514 rev
Utopia Bedding Throw Pillows Decorative 18x18 Pillow Inserts Set of 4
Utopia Bedding$23.324.7★126,455 rev
Newest
by launch date
MIULEE 18x18 Inch Pillow Inserts Pack of 2 with 100% Cotton Cover
MIULEE$14.7561 rev
MIULEE 18x18 Inch Pillow Inserts Pack of 4 with 100% Cotton Cover
MIULEE$21.0951 rev
MIULEE 18x18 Pillows Inserts Pack of 4 Down Alternative Virgin Filling
MIULEE$20.95532 rev
Phantoscope Premium 18x18 Throw Pillow Inserts Ultra-Soft Air Layer Pillow Inserts Down Alternative Decorative Throw Pillows for Couch Bedroom Square Cushion Sham Stuffer Pack of 1
Phantoscope$10.42296 rev
Amazon Basics Square Hypoallergenic Down Alternative Pillow Insert Machine Washable Softness and Support 20 inch 2-Pack
Amazon Basics$17.541,946 rev
Trending
90-day click momentumMIULEE 18x18 Inch Pillow Inserts Pack of 2 with 100% Cotton Cover
MIULEE$14.754.6★
MIULEE 18x18 Inch Pillow Inserts Pack of 4 with 100% Cotton Cover
MIULEE$21.094.4★
Amazon Basics Square Hypoallergenic Down Alternative Pillow Insert Machine Washable Softness and Support 20 inch 2-Pack
Amazon Basics$17.544.3★
FAVRIQ 18 x 18 Pillow Inserts (Set of 2) - 18 Inch Square Interior Sofa Throw Pillow with 100% Cotton Cover - Decorative Pillow Insert Pair - White Couch Pillow
FAVRIQ$24.384.7★
Phantoscope Premium 18x18 Throw Pillow Inserts Ultra-Soft Air Layer Pillow Inserts Down Alternative Decorative Throw Pillows for Couch Bedroom Square Cushion Sham Stuffer Pack of 1
Phantoscope$10.424.7★
What buyers say about pillow 18x18
What buyers praise and complain about, mined from review topics.What buyers love
“A+ quality”
“Fit perfectly for what I needed”
“Soft and smooth”
“Soft and fluffy”
“They were perfect for the cushion covers I purchased”
“Great Buy”
“Extremely comfortable”
“Better than I expected”
“Quality pillows”
“The shape is good”
What buyers complain about
“No Fluff”
“Not super thick”
“Dissatisfied with quality”
“Bit small”
“not enough cushion”
“False ADVERTISEMENT”
“Not worth the price”
“Not very sturdy”
“dont keep their shape”
“Zero support”
Top return reasons
Common questions
- Is pillow 18x18 profitable to sell on Amazon United States?
- The niche generates $55K/yr across 26 tracked products. 6 of 6 products launched in the last 360 days are still selling. 90-day search growth is +1.4%. Flapen's verdict: Skip it (48/100).
- How competitive is the pillow 18x18 niche?
- 12 brands and 18 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 86% of demand.
- What do buyers complain about in pillow 18x18?
- Top complaints mined from reviews: Fluffiness, Thickness, Quality-Overall. The return rate is 1.6%.
- When does demand for pillow 18x18 peak?
- Demand peaks in Aug–Sep–Dec; the busiest month runs 6.5× the quietest.
- What does it cost to enter the pillow 18x18 niche?
- Listings span $6.89–$29.03; the average listing price is $17.38 (sweet spot $15–$100). The average incumbent carries 20,815 reviews — the moat a new listing must climb.