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Fiberglass Filler

Maybe

An estimated 0.3% of orders come back. But the top 5 products take 68% of clicks, so Fiberglass Filler is a Maybe.

Flapen Score
56
56 / 100
Top 19% of 7,287 Automotive niches · +7 vs the category median of 49
Market size
$277K/yr143K searches / yr
90-day growth
+30.6%search demand this quarter
Competition
68%top-5 click share · 10 brands · 86 sellers

Flapen Score

Fiberglass Filler against its category

The dotted line is the Automotive average. Past it, Fiberglass Filler is stronger. Inside it, weaker.

56Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Fiberglass Filler market on Amazon at a glance

Shoppers on Amazon United States searched for Fiberglass Filler 143K times last year and spent an estimated $277K. The top 5 brands take 82% of clicks. Demand peaks in May. Flapen scores it 56 out of 100, a Maybe.

01 · Demand

An estimated 5.8% of those searches ended in a purchase.

Shoppers searched for this 143K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 5.8% of those searches ended in a purchase. Searches in the last 90 days moved +30.6% against the 90 days before. Searches, conversion and average price together put the market at an estimated $277K a year.

Searches, last 12 months
143K
Growth, 90 days vs prior 90
+30.6%
Conversion, latest week
5.8%
Market size, estimated
$277Ka year
Peak month
May1.8× the quietest month
Top search term
fiberglass filler27K searches a year

02 · Price

A sale here is worth $33.19.

Listings sell for $33.19 on average, from $7.31 to $60.46. Amazon reports units sold in ranges. This niche sold 10K to 13K a year. The average listing sells 750 to 1,000 of them. At $33.19 that is $25K to $33K a year per listing.

Average price
$33.19inside the $15 to $100 sweet spot
Price range
$7.31–$60.46
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
10K–13K
Units per listing a year
750–1,000
Revenue per listing a year
$25K–$33K
Returns
0.3%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is low.

87% of listings pay for placement with sponsored ads. 80% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #47 within Fillers, Adhesives & Sealants. It carries 763 reviews at 4.56 stars, so a new listing needs social proof before a better product.

Sponsored listings
87%
Prime listings
80%
Out of stock, average day
0.0%
Average rank
#47in Fillers, Adhesives & Sealants
Average rating
4.56 starsAmazon United States average 4.42 stars
Average reviews
763per listing
Listings tracked
15

04 · Newcomers

Brands here are established.

The brands on the shelf have sold for 67 months on average, so the names here are established.

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

Products

Top Fiberglass Filler 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 68% of clicks. Leaders hold, but buyers still shop past them.

Brands

10 rising

Sellers

86

Top-5 brand share

82%

Top 20: 100%

Top-5 click share

68%

Top 20: 100%

Open market

13%

  • Brand 128%
  • Brand 219%
  • Brand 314%
  • Brand 412%
  • Brand 59%
  • Brand 65%
  • Open — no brand owns it (4 brands, 13%)

Demand

Fiberglass Filler search demand

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

3K2KSpike '25Spike '26SepDecMarJunAugNovMarMay

Peak months: May · busiest ÷ quietest = 1.8×

Search terms

Top Fiberglass Filler search terms shoppers use

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

  • fiberglass filler27K/yr
  • fiberglass body filler16K/yr
  • bondo glass12K/yr
  • fiberglass bondo12K/yr
  • duraglass body filler8K/yr
  • short strand fiberglass filler6K/yr
  • duraglass9K/yr
  • bondo fiberglass6K/yr
  • kitty hair fiberglass filler6K/yr
  • fiberglass putty5K/yr

Reviews and returns

What reviews say buyers love and hate about Fiberglass Filler

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

26%of positive reviews mention “Quality-Overall”
15%of negative reviews mention “Flexibility”
0.3%of orders come back
“Unfortunately, the one I received is hard as a rock with almost no flex at all”
A buyer, on “Flexibility”15% 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.

22 topics

NegativePositive

FAQ

Common Fiberglass Filler questions

Answered from the same tracked data.