black grout pen
Skip itPrices mostly outside the sweet spot ($3.84–$10.79) — this niche doesn't clear our bar today.
Quality gap
Incredible3.7★avg incumbent rating — lower means beatable quality
Conversion
Incredible15.5%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.8%return rate — above 5% kills the launch gate
Review moat
Good881.23avg incumbent reviews — the moat a new listing must climb
Brand share
Okay89%top-5 brand share — brands hold most of the demand
Competition
Bad80%top-5 click share — a locked-up shelf
Avg price
Bad£5.79avg listing price — sweet spot $15–$100
Market size
Bad£45K£45K/yr · 50K searches
Growth
Bad-29.8%90-day search growth — must beat 0% to launch
Price range
Bad£3.84–£10.79cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, black grout pen is a £45K/yr Amazon United Kingdom market (50K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Mar. Verdict: Skip it — 42/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
black grout pen market data
- Units sold / yr
- 6K–8K
- avg 500–750/product
- Revenue / yr
- £35K–£46K
- units × avg price
- Conversion rate
- 15.5%
- Avg BSR
- #158
- Page quality
- 0%
- Prime
- 92%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 31 months
- Avg seller age
- 204 days
Competition & brand share
The top 5 products capture 80% of clicks — a locked-up shelf that new listings rarely crack.Brands
11 rising
Sellers
13
Top-5 brand share
89%
Top 20: 100%
Top-5 click share
80%
Top 20: 100%
Open market
9%
- RAINBOW CHALK MARKERS LTD42%
- DONQL24%
- Floor-Fix Pro14%
- Vryth5%
- Lumoia5%
- flintronic3%
- Open — no brand owns it (5 brands, 9%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -29.8% search growth over the last 90 days.Peak months: Mar · busiest ÷ quietest = 2.2×
Top black grout pen search terms
- black grout pen31K/yr
- grout pen black10K/yr
- black grout pen for tiles9K/yr
Top black grout pen 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 13 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
DONQL 6Pcs Tile Pen Black Grout Pen for Tiles Bathroom with Replacement Nib Tips Anti-Grout Tile Pen Marker for Restoring Tile Grout Wall Floor Bathroom Kitchen and Floor Tiles (Black)
DONQL£4.944.0★974 rev
Grout Pen - Designed for restoring tile grout in bathrooms & kitchens (Black)
RAINBOW CHALK MARKERS LTD£3.844.1★5,507 rev
Twin Pack (BLACK) Grout Pen - Designed for restoring tile grout in bathrooms & kitchens
RAINBOW CHALK MARKERS LTD£6.674.2★1,308 rev
Black Grout Pen Tile Grout Paint Marker From Floor-Fix Pro | Waterproof Grout Colorant & Sealer Pen | Bathroom & Kitchen Tile Grout Whitener | Narrow 5mm Precision Tip | 2 Pack
Floor-Fix Pro£7.433.6★9 rev
3 x BLACK Grout Pens - Designed for Restoring Tile Grout in bathrooms & Kitchens
RAINBOW CHALK MARKERS LTD£10.794.1★1,000 rev
Newest
by launch date
4PCS Grout Pen Black Tile Grout Pen Set Tile Paint Marker Easy to Use Reviver for Restoring Discoloured & Faded Joints in Bathrooms Kitchen Floor Wall Lines
Lumoia£5.320 rev
Grout Pen Twin Pack Black Tile Grout Repair Pen for Bathroom and Kitchen Restores and Colors Grout Lines Anti-Mold Formula Covers up to 120m
Rivvra£4.082 rev
Grout Pen Patio Grout Filler Pen Surface Lines Repair Marker Pen
SNMYGS£3.870 rev
4PCS Black Grout Pen Tile Paint Marker Grout Repairer for Tiles Wall and Floor Reviver Joints Repair Pens Easy to Use for Restoring Tile Bathroom Grout Wall Floor Kitchen Porch Patio Repair (Black)
Wufaa£4.836 rev
Black Grout Pen Tile Grout Paint Marker From Floor-Fix Pro | Waterproof Grout Colorant & Sealer Pen | Bathroom & Kitchen Tile Grout Whitener | Narrow 5mm Precision Tip | 2 Pack
Floor-Fix Pro£7.439 rev
Trending
90-day click momentum4PCS Grout Pen Black Tile Grout Pen Set Tile Paint Marker Easy to Use Reviver for Restoring Discoloured & Faded Joints in Bathrooms Kitchen Floor Wall Lines
Lumoia£5.320.0★
Grout Pen Twin Pack Black Tile Grout Repair Pen for Bathroom and Kitchen Restores and Colors Grout Lines Anti-Mold Formula Covers up to 120m
Rivvra£4.082.5★
4PCS Black Grout Pen Tile Paint Marker Grout Repairer for Tiles Wall and Floor Reviver Joints Repair Pens Easy to Use for Restoring Tile Bathroom Grout Wall Floor Kitchen Porch Patio Repair (Black)
Wufaa£4.833.2★
Black Grout Pen Tile Grout Paint Marker From Floor-Fix Pro | Waterproof Grout Colorant & Sealer Pen | Bathroom & Kitchen Tile Grout Whitener | Narrow 5mm Precision Tip | 2 Pack
Floor-Fix Pro£7.433.6★
Grout Pen Patio Grout Filler Pen Surface Lines Repair Marker Pen
SNMYGS£3.870.0★
What buyers say about black grout pen
What buyers praise and complain about, mined from review topics.What buyers love
“Easy to use”
“Does the job”
“Good for the price”
“Lasts well, good colour”
“Great quality”
“Works very well”
“Great easy to use just the ink bleeds alot so can be messy”
“Surprisingly durable”
“They are light”
“The black colour goes on smoothly and gives a clean, consistent finish”
What buyers complain about
“Not waterproof”
“buy a better well known make”
“dark black unlike some of the alternatives which I have used before”
“The paint is far too thick to flow properly between the tiles”
“It has made a mess of my bathroom”
“Is the product good value for money: No”
“The black ink did not come out by following instructions”
“Disappointing Results – Too Thick and Too Dry”
“So not great value for money or doesnt have durability”
“The pens are advertised as grout revivers, but in reality they behave much more like standard wipeboard markers than a durable tile grout solution”
Top return reasons
Common questions
- Is black grout pen profitable to sell on Amazon United Kingdom?
- The niche generates £45K/yr across 13 tracked products. 0 of 7 products launched in the last 360 days are still selling. 90-day search growth is -29.8%. Flapen's verdict: Skip it (42/100).
- How competitive is the black grout pen niche?
- 11 brands and 13 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 89% of demand.
- What do buyers complain about in black grout pen?
- Top complaints mined from reviews: Water Resistance, Quality-Overall, Color. The return rate is 0.8%.
- When does demand for black grout pen peak?
- Demand peaks in Mar; the busiest month runs 2.2× the quietest.
- What does it cost to enter the black grout pen niche?
- Listings span £3.84–£10.79; the average listing price is £5.79 (sweet spot $15–$100). The average incumbent carries 881 reviews — the moat a new listing must climb.