Skip to content

21mm Flange Insert

Fail

Prices span $6.92–$14.62, mostly outside the sweet spot, so 21mm Flange Insert is a Fail.

Flapen Score
28
28 / 100
Ranks 2,297 of 2,472 Baby Products niches · −16 vs the category median of 44
Market size
$53K/yr40K searches / yr
90-day growth
-7.5%search demand this quarter
Competition
93%top-5 click share · 7 brands · 9 sellers

Flapen Score

21mm Flange Insert against its category

The dotted line is the Baby Products average. Past it, 21mm Flange Insert is stronger. Inside it, weaker.

28Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The 21mm Flange Insert market on Amazon at a glance

Shoppers on Amazon United States searched for 21mm Flange Insert 40K times last year and spent an estimated $53K. The top 5 brands take 93% of clicks. Flapen scores it 28 out of 100, a Fail.

01 · Demand

An estimated 14.6% of those searches ended in a purchase.

Shoppers searched for this 40K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 14.6% of those searches ended in a purchase. Searches in the last 90 days moved -7.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $53K a year.

Searches, last 12 months
40K
Growth, 90 days vs prior 90
-7.5%
Conversion, latest week
14.6%
Market size, estimated
$53Ka year
Peak month
July1.4× the quietest month
Top search term
21mm flange insert22K searches a year

02 · Price

A sale here is worth $9.27.

Listings sell for $9.27 on average, from $6.92 to $14.62. Amazon reports units sold in ranges. This niche sold 6K to 8K a year. The average listing sells 500 to 750 of them. At $9.27 that is $5K to $7K a year per listing.

Average price
$9.27under the $15 to $100 sweet spot
Price range
$6.92–$14.62
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
6K–8K
Units per listing a year
500–750
Revenue per listing a year
$5K–$7K
Returns
4.8%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is ads and reviews.

100% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 6.8% of listings are out of stock. The average listing ranks #36 within Breastfeeding. It carries 1,580 reviews at 4.53 stars, so a new listing needs social proof before a better product.

Sponsored listings
100%
Prime listings
100%
Out of stock, average day
6.8%
Average rank
#36in Breastfeeding
Average rating
4.53 starsAmazon United States average 4.42 stars
Average reviews
1,580per listing
Listings tracked
7

04 · Newcomers

Brands here are settling in.

The brands on the shelf have sold for 37 months on average, so the names here are settling in.

Launched, last 12 months
0
Successful launches
0Amazon's first-year sales bar
Average brand age
37 months

Products

Top 21mm Flange Insert products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Sign in to see the products

The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone.

Competition

Competition: brands, sellers & click share

The top 5 products take 93% of clicks. A locked shelf that new listings rarely crack.

Brands

7 falling

Sellers

9

Top-5 brand share

93%

Top 20: 100%

Top-5 click share

93%

Top 20: 100%

Open market

3%

  • Brand 153%
  • Brand 224%
  • Brand 36%
  • Brand 46%
  • Brand 54%
  • Brand 64%
  • Open — no brand owns it (1 brand, 3%)

Demand

21mm Flange Insert search demand

Weekly searches over the year, seasonality beneath. Pick a range.

1K600Spike '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Search terms

Top 21mm Flange Insert search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • 21mm flange insert22K/yr
  • 21 mm flange insert14K/yr
  • 21 flange inserts3K/yr

Reviews and returns

What reviews say buyers love and hate about 21mm Flange Insert

We read the reviews and the return reasons for every product selling here.

26%of positive reviews mention “Size-Overall”
25%of negative reviews mention “Size-Overall”
4.8%of orders come back
“Not true size”
A buyer, on “Size-Overall”25% of negative reviews mention the same topic

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

NegativePositive

FAQ

Common 21mm Flange Insert questions

Answered from the same tracked data.