Is fine filler profitable to sell on Amazon United Kingdom?

The niche generates £82K/yr across 17 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -27.9%. Flapen's verdict: Skip it (46/100).

How competitive is the fine filler niche?

7 brands and 82 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 90% of demand.

What do buyers complain about in fine filler?

Top complaints mined from reviews: Ease Of Use, Quality-Overall, Hard Feel. The return rate is 0.4%.

What does it cost to enter the fine filler niche?

Listings span £1.04–£37.99; the average listing price is £9.36 (sweet spot $15–$100). The average incumbent carries 2,309 reviews — the moat a new listing must climb.

fine filler

Skip it

Soft demand (-27.9% this quarter) — this niche doesn't clear our bar today.

Conversion

Incredible18.5%

search→purchase rate — share of searches ending in a sale

Returns

Incredible0.4%

return rate — above 5% kills the launch gate

Price range

Good£1.04–£37.99

cheapest to priciest tracked listing — scored on the share inside $15–$100

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Competition

Okay58%

top-5 click share — leaders hold, buyers still browse

Review moat

Okay2,309.41

avg incumbent reviews — the moat a new listing must climb

Avg price

Okay£9.36

avg listing price — sweet spot $15–$100

Brand share

Okay90%

top-5 brand share — brands hold most of the demand

Market size

Bad£82K

£82K/yr · 48K searches

Growth

Bad-27.9%

90-day search growth — must beat 0% to launch

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.

Data updated Jul 22, 2026 · scored weekly · How we score niches

fine filler market data

Units sold / yr: 6K–8K; avg 250–500/product
Revenue / yr: £56K–£75K; units × avg price
Conversion rate: 18.5%
Avg BSR: #118
Page quality: 0%
Prime: 82%
Sponsored: 12%
Out of stock: 0.0%
Avg brand age: 51 months
Avg seller age: 175 days

Competition & brand share

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

Brands

7 rising

Sellers

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

58%

Top 20: 100%

Open market

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

Demand

Weekly Amazon search volume, last 42 weeks — -27.9% search growth over the last 90 days.

Open Trend

Top fine filler search terms

fine surface filler9K/yr -16.5%13.1% conv.
fine filler8K/yr -24.1%15.3% conv.
fine filler for walls8K/yr -42.5%18.2% conv.
ronseal smooth finish filler5K/yr -27.4%26.0% conv.
ronseal filler4K/yr +7.2%14.9% conv.
polycell smoothover8K/yr -49.7%3.3% conv.
polyfilla smoothover5K/yr -27.6%3.6% conv.

All search terms

Top fine filler 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 17 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Ronseal 6886271-HHW Smooth Finish Filler Multi-Purpose Ready Mixed 900g White

Ronseal£5.714.5★9,067 rev

Palace Fine Surface FIller Tub 600gm - Durable Multi-Purpose Filler for Repairing Shallow Gaps Cracks and Fine Nicks Sandable & Paintable

Palace£1.044.6★2,196 rev

Bartoline Ready Mixed Fine Surface Filler 600g Ultra-Smooth Finish Quick-Drying Easy Application Ideal for Interior Repairs

Bartoline£2.724.2★62 rev

Ronseal Smooth Finish Flexible Filler 330G Super Flexible Interior Wall Filler For Cracks And Holes Easy To Apply Smooth Finish Paintable Long-Lasting Repair Solution

Ronseal£3.864.3★1,115 rev

Ronseal Smooth Finish Filler Multi-Purpose Ready Mixed 1.8kg white

Ronseal£7.334.4★4,140 rev

Newest

by launch date

Gorilla Smooth Finish Wall Filler 473ml Applies Purple & Dries White | Repairs Small and Large Holes in Walls & Ceiling Smooth Finish Wont Shrink or Crack Fills any Depth| Indoor & Outdoor Use

GORILLA£8.96326 rev

10mo ago

Toupret Fine Surface Filler - Ultra-Smooth Interior Wall Repair for Minor Imperfections - White Easy Sanding Paintable No Shrink - Professional Finish for Plaster Ceilings & Walls - 1.5kg

Toupret£7.33330 rev

5y ago

Toupret Fine Surface Filler - Ultra-Smooth Interior Wall Repair for Minor Imperfections - White Easy Sanding Paintable No Shrink - Professional Finish for Plaster Ceilings & Walls - 0.33kg

Toupret£5.4552 rev

5y ago

Palace Fine Surface FIller Tub 600gm - Durable Multi-Purpose Filler for Repairing Shallow Gaps Cracks and Fine Nicks Sandable & Paintable

Palace£1.042,196 rev

6y ago

Bartoline Ready Mixed Fine Surface Filler 600g Ultra-Smooth Finish Quick-Drying Easy Application Ideal for Interior Repairs

Bartoline£2.7262 rev

11y ago

What buyers say about fine filler

What buyers praise and complain about, mined from review topics.

What buyers love

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”

Efficiency4%

“Surprisingly effective”

Color3%

“The colour change was really handy so i could see what bits were ready”

Moist/Dry3%

“Quick drying and durable”

Texture/Consistency-Overall3%

“Great smooth consistency”

Soft Feel3%

“very smooth”

What buyers complain about

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”

Value For Money4%

“Slightly cheaper”

Size-Overall4%

“Small pot”

Paint Quality4%

“the bumps remained clear as day when I painted over them”

Advertised Vs Actual Product2%

“Don't believe everything that's advertised”

Ease Of Cleaning2%

“Afterwards you have to clean it ALL”

Top return reasons

Leak-Proof52%

Defective Material/Parts14%

Functionality-Overall4%

Size-Overall4%

Ease Of Use4%

Product Condition3%

Hard Feel3%

Maintenance And Repair3%