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Fine Filler

soft demand (-27.9% this quarter) — Fine Filler doesn't clear our bar today.

Flapen Score

46
Skip it
Market size 21Growth 11Conversion 99Competition 45Returns 98Price range 62Avg price 28Brand share 25Review moat 42Quality gap 58
This niche Category average

Is Fine Filler profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, Fine Filler is a £82K/yr Amazon United Kingdom market (48K searches/yr). The top 5 brands hold 90% of demand. Verdict: Skip it — 46/100.

Fine Filler: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -27.9% over the last 90 days and 18.5% of searches end in a purchase.

£82K

revenue / yr

Units sold / yr8K
Search volume / yr-27.9%48K
Conversion rate18.5%
Avg price£9.36

Who owns the niche?

The top 5 brands hold 90% of demand, so 10% of the market is open.

10%

open market share

Brands · sellers7 · 82
Top-5 product click share58%
Open market10%
Avg brand age51 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.4★ — the gap to enter on.

0/100

page quality · 17 products

Sponsored placement12%
New entrants (1y)1· 1 succeeded
Avg rating4.4★
Avg reviews2,309

Top Fine Filler products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.

£0£8K£16K£25K£33K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

7 rising

Sellers

82

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

58%

Top 20: 100%

Open market

4%

  • Ronseal50%
  • POLYCELL12%
  • Polycell10%
  • Palace9%
  • Bartoline9%
  • Toupret6%
  • Open — no brand owns it (1 brand, 4%)

Fine Filler demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume48KCVR18.5%Products17Brands7Top 5 Brands90%OOS Rate0.0%Rating4.4★Reviews2,309Avg BSR#118
3K2KSpike '26Oct '25Nov '25Jan '26Mar '26Apr '26Jun '26

Top Fine Filler search terms shoppers use

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

  • fine surface filler9K/yr
  • fine filler8K/yr
  • fine filler for walls8K/yr
  • ronseal smooth finish filler5K/yr
  • ronseal filler4K/yr
  • polycell smoothover8K/yr
  • polyfilla smoothover5K/yr

What reviews say buyers love and hate about Fine Filler

What buyers mention most, as a share of all reviews.

What buyers love

82% of reviews
Ease Of Use19%

Easy to use

Quality-Overall18%

Its well-made

Advertised Vs Actual Product14%

As advertised

Value For Money11%

Good Price

Stitch/Finish/Polish4%

Great finish

What buyers complain about

72% of reviews
Ease Of Use16%

Easy to use - more difficult than I expected

Quality-Overall12%

Poor product

Hard Feel12%

Arrived half full and hard

Leak-Proof10%

Arrived having completely leaked out into the box

Color6%

white is also wet in this case

Fine Filler return rate & reasons

Why buyers send it back, as a share of all return requests.

0.4%

Return rate

7%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Leak-Proof
52%
2Defective Material/Parts
14%
3Functionality-Overall
4%
4Size-Overall
4%
5Ease Of Use
4%

Common Fine Filler questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Fine Filler 46/100 on Amazon United Kingdom — Skip it. The niche generates £82K/yr across 17 tracked products. 1 of 1 products launched in the last 360 days are still selling. Search demand moved -27.9% over the last 90 days.
Fine Filler buyers on Amazon United Kingdom complain most about Ease Of Use, Quality-Overall, Hard Feel, the themes mined from the niche's reviews. Its return rate is 0.4%.