filler primer
Skip itPrices mostly outside the sweet spot ($5.20–$10.85) — this niche doesn't clear our bar today.
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Conversion
Great9.2%search→purchase rate — share of searches ending in a sale
Review moat
Good1,197.25avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Bad-0.3%90-day search growth — must beat 0% to launch
Avg price
Bad£8.11avg listing price — sweet spot $15–$100
Competition
Bad80%top-5 click share — a locked-up shelf
Market size
Bad£36K£36K/yr · 49K searches
Brand share
Bad97%top-5 brand share — brand-locked demand
Price range
Bad£5.20–£10.85cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, filler primer is a £36K/yr Amazon United Kingdom market (49K searches/yr). The top 5 brands hold 97% of demand. Verdict: Skip it — 34/100.
Data updated Jul 18, 2026 · scored weekly · How we score niches
filler primer market data
- Units sold / yr
- 4K–5K
- avg 250–500/product
- Revenue / yr
- £32K–£41K
- units × avg price
- Conversion rate
- 9.2%
- Avg BSR
- #43
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 50%
- Out of stock
- 8.1%
- Avg brand age
- 68 months
- Avg seller age
- 186 days
Competition & brand share
The top 5 products capture 80% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 falling
Sellers
20
Top-5 brand share
97%
Top 20: 100%
Top-5 click share
80%
Top 20: 100%
Open market
1%
- JENOLITE36%
- Simoniz31%
- Hycote23%
- Autotek4%
- MOTIP3%
- Bartoline2%
- Open — no brand owns it (1 brand, 1%)
Demand & seasonality
Weekly Amazon search volume, last 63 weeks — -0.3% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top filler primer search terms
- filler primer22K/yr
- filler primer spray8K/yr
- filler primer for 3d prints4K/yr
- primer filler spray paint4K/yr
- primer filler4K/yr
- rustoleum filler primer3K/yr
- spray filler3K/yr
- filler primer paint3K/yr
Top filler primer 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 12 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
JENOLITE Primer Filler Spray Paint | WHITE | High Fill Multi-Surface Primer Paint | Fills Small Dents & Scratches | Perfect For Car Bodywork 3D Printer Models & More | 400ml
JENOLITE£10.554.4★2,159 rev
Simoniz SIMB90D High Build Primer Spray Paint Filler Primer Removes Imperfections pre-Paint 500ml
Simoniz£6.664.5★71 rev
Hycote High Build Aerosol Car Spray Paint Filler Primer 400 ml
Hycote£6.904.5★1,389 rev
Simoniz Grey Plastic Primer
Simoniz£5.204.6★669 rev
JENOLITE Primer Filler Spray Paint | BLACK | High Fill Multi-Surface Primer Paint | Fills Small Dents & Scratches | Perfect For Car Bodywork 3D Printer Models & More | 400ml
JENOLITE£10.434.4★2,159 rev
Newest
by launch date
JENOLITE Primer Filler Spray Paint (GREY) | 500ml | High Fill Multi-Surface Primer Paint | Fills Small Dents & Scratches | Perfect For Car Bodywork 3D Printer Models & More
JENOLITE£10.852,159 rev
Bartoline Filler Primer Grey Spray Paint 400ml Matt Finish Multi-Surface Filler and Primer for Metal Wood Plastic Fills Scratches Fast-Drying High-Coverage Base Coat for Topcoats
Bartoline£8.84155 rev
JENOLITE Plastic Primer Spray Paint | GREY | 400ml | Premium Quality Plastic Primer | Promotes Adhesion | Primer Spray Paint for Automotive Garden Furniture Models & Other Hard Plastics
JENOLITE£10.411,399 rev
JENOLITE Primer Filler Spray Paint | WHITE | High Fill Multi-Surface Primer Paint | Fills Small Dents & Scratches | Perfect For Car Bodywork 3D Printer Models & More | 400ml
JENOLITE£10.552,159 rev
JENOLITE Primer Filler Spray Paint | BLACK | High Fill Multi-Surface Primer Paint | Fills Small Dents & Scratches | Perfect For Car Bodywork 3D Printer Models & More | 400ml
JENOLITE£10.432,159 rev
Trending
90-day click momentumJENOLITE Primer Filler Spray Paint (GREY) | 500ml | High Fill Multi-Surface Primer Paint | Fills Small Dents & Scratches | Perfect For Car Bodywork 3D Printer Models & More
JENOLITE£10.854.4★
Hycote Bodyshop High Build Aerosol Car Spray Paint Grey Primer 400 ml
Hycote£5.284.6★
Simoniz Grey Plastic Primer
Simoniz£5.204.6★
Simoniz SIMB90D High Build Primer Spray Paint Filler Primer Removes Imperfections pre-Paint 500ml
Simoniz£6.664.5★
JENOLITE Primer Filler Spray Paint | WHITE | High Fill Multi-Surface Primer Paint | Fills Small Dents & Scratches | Perfect For Car Bodywork 3D Printer Models & More | 400ml
JENOLITE£10.554.4★
What buyers say about filler primer
What buyers praise and complain about, mined from review topics.What buyers love
“Quality filler primer dont look anywhere else”
“Great spray primer for van, high quality and easy to spray”
“Definitely worth the extra few quid”
“Does all it is supposed to to”
“he really enjoys using this matt finish spray”
“But did go on pretty well”
“Nice and thick and very easy to apply”
“Easy to use”
“Very good plastic primer”
“has held up in constant rain”
What buyers complain about
“Poor quality”
“Whilst re-assembling the part I had painted, it started to all flake off”
“Not high build”
“.just cloggs up”
“Used half way spraying a item when the aerosol stopped working”
“remember some of them coming out so thick they splattered”
“the can was dead of pressure it splattered all over my bumper causing me more work”
“Doesn't do what it's supposed to do”
“not WHITE as I had searched for”
Top return reasons
Common questions
- Is filler primer profitable to sell on Amazon United Kingdom?
- The niche generates £36K/yr across 12 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -0.3%. Flapen's verdict: Skip it (34/100).
- How competitive is the filler primer niche?
- 7 brands and 20 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 97% of demand.
- What do buyers complain about in filler primer?
- Top complaints mined from reviews: Quality-Overall, Paint Quality, Design-Overall. The return rate is 0.3%.
- When does demand for filler primer peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the filler primer niche?
- Listings span £5.20–£10.85; the average listing price is £8.11 (sweet spot $15–$100). The average incumbent carries 1,197 reviews — the moat a new listing must climb.