---
title: "Black Grout — $65K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/black-grout"
last_updated: "2026-08-08T18:14:31.052Z"
locale: en
meta:
description: "Niche score 36/100 · $65K/yr market · 27K searches/yr · $14.27 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 36/100 · $65K/yr market · 27K searches/yr · $14.27 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Black Grout — $65K/yr Amazon US Niche (2026) - Flapen"
---
# **black grout**
**Skip it**
A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Market size 16Growth 22Conversion 98Competition 0Returns 47Price range 57Avg price 69Brand share 0Review moat 24Quality gap 82
**Conversion**
**Incredible****17.2%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Good****$14.27**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$8.90–$23.07**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Okay****3.2%**
return rate — above 5% kills the launch gate
**Review moat**
**Bad****6,429.8**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-6.7%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$65K**
$65K/yr · 27K searches
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, black grout is a $65K/yr Amazon United States market (27K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Feb–Sep. Verdict: Skip it — 36/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **black grout market data**
- **Units sold / yr**
- **4K–5K**
- avg 500–750/product
- **Revenue / yr**
- **$57K–$71K**
- units × avg price
- **Conversion rate**
- **17.2%**
- **Avg BSR**
- **#32**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **61 months**
- **Avg seller age**
- **191 days**
## **Competition & brand share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**2 **▼falling
**Sellers**
**3**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- Rainbow Chalk Markers Limited95% - YaoQiYou5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -6.7% search growth over the last 90 days.
1K750Spike '25Prime Day '25 seasonSepDecMarJunAugNovMarMay
Peak months: Feb, Sep · busiest ÷ quietest = 2.3×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/black-grout/trend)
## **Top black grout search terms**
- **black grout pen**13K/yr-2.9%14.9% conv. - **grout pen black**9K/yr-1.1%13.1% conv. - **black grout pen for tile**5K/yr-33.8%11.6% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/black-grout/search-terms)
## **Top black grout 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.
0%15%$10K30%$20K45%$29K60%$39K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 5 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Grout Pen Black Tile Paint Marker: Waterproof Grout Paint Tile Grout Colorant and Sealer Pen - Black Narrow 5mm Tip (7mL)**Rainbow Chalk Markers Limited**$8.90**4.2★6,514 rev](https://www.amazon.com/dp/B006MCRIA0) [2**Grout Pen Black Tile Paint Marker: Waterproof Grout Paint Tile Grout Colorant and Sealer Pen - Narrow 5mm 2 Pack with Extra Tips (7mL) - Black**Rainbow Chalk Markers Limited**$17.84**4.3★13,572 rev](https://www.amazon.com/dp/B09GG8J3JY) [3**Grout Pen Black Tile Paint Marker: Waterproof Grout Paint Tile Grout Colorant and Sealer Pen - Black Narrow 5mm Tip (7mL) - 3 Pack**Rainbow Chalk Markers Limited**$23.07**4.4★5,415 rev](https://www.amazon.com/dp/B08SCT1SGB) [4**5 PCS Tile Grout Pen Home Repair Pen Tile Paint Markers for Tiles Floor Wall Bathroom Kitchen Repair Tools (Black)**YaoQiYou**$9.72**3.9★134 rev](https://www.amazon.com/dp/B0CTFCD9YB) [5**Grout Pen Black Tile Paint Marker: Waterproof Grout Paint Tile Grout Colorant and Sealer Pen - Black Wide 15mm Tip (20mL)**Rainbow Chalk Markers Limited**$11.81**4.2★6,514 rev](https://www.amazon.com/dp/B006MDI164)
### **Newest**
by launch date
[**Grout Pen Black Tile Paint Marker: Waterproof Grout Paint Tile Grout Colorant and Sealer Pen - Black Narrow 5mm Tip (7mL) - 3 Pack**Rainbow Chalk Markers Limited**$23.07**5,415 rev1y ago](https://www.amazon.com/dp/B08SCT1SGB) [**5 PCS Tile Grout Pen Home Repair Pen Tile Paint Markers for Tiles Floor Wall Bathroom Kitchen Repair Tools (Black)**YaoQiYou**$9.72**134 rev2y ago](https://www.amazon.com/dp/B0CTFCD9YB) [**Grout Pen Black Tile Paint Marker: Waterproof Grout Paint Tile Grout Colorant and Sealer Pen - Narrow 5mm 2 Pack with Extra Tips (7mL) - Black**Rainbow Chalk Markers Limited**$17.84**13,572 rev4y ago](https://www.amazon.com/dp/B09GG8J3JY) [**Grout Pen Black Tile Paint Marker: Waterproof Grout Paint Tile Grout Colorant and Sealer Pen - Black Narrow 5mm Tip (7mL)**Rainbow Chalk Markers Limited**$8.90**6,514 rev14y ago](https://www.amazon.com/dp/B006MCRIA0) [**Grout Pen Black Tile Paint Marker: Waterproof Grout Paint Tile Grout Colorant and Sealer Pen - Black Wide 15mm Tip (20mL)**Rainbow Chalk Markers Limited**$11.81**6,514 rev14y ago](https://www.amazon.com/dp/B006MDI164)
### **Trending**
90-day click momentum
[**Grout Pen Black Tile Paint Marker: Waterproof Grout Paint Tile Grout Colorant and Sealer Pen - Black Narrow 5mm Tip (7mL)**Rainbow Chalk Markers Limited**$8.90**4.2★**▲ 12%**](https://www.amazon.com/dp/B006MCRIA0) [**Grout Pen Black Tile Paint Marker: Waterproof Grout Paint Tile Grout Colorant and Sealer Pen - Black Narrow 5mm Tip (7mL) - 3 Pack**Rainbow Chalk Markers Limited**$23.07**4.4★**— 4%**](https://www.amazon.com/dp/B08SCT1SGB) [**Grout Pen Black Tile Paint Marker: Waterproof Grout Paint Tile Grout Colorant and Sealer Pen - Black Wide 15mm Tip (20mL)**Rainbow Chalk Markers Limited**$11.81**4.2★**— 3%**](https://www.amazon.com/dp/B006MDI164) [**5 PCS Tile Grout Pen Home Repair Pen Tile Paint Markers for Tiles Floor Wall Bathroom Kitchen Repair Tools (Black)**YaoQiYou**$9.72**3.9★**— 4%**](https://www.amazon.com/dp/B0CTFCD9YB) [**Grout Pen Black Tile Paint Marker: Waterproof Grout Paint Tile Grout Colorant and Sealer Pen - Narrow 5mm 2 Pack with Extra Tips (7mL) - Black**Rainbow Chalk Markers Limited**$17.84**4.3★**▼ 13%**](https://www.amazon.com/dp/B09GG8J3JY)
## **What buyers say about black grout**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Ease Of Use**23%
*“Easy to use”*
**Quality-Overall**10%
*“EXCELLENT PRODUCT”*
**Efficiency**8%
*“Seems to work great”*
**Color**8%
*“Color is good”*
**Ease Of Cleaning**7%
*“easy to wipe off”*
**Advertised Vs Actual Product**7%
*“It worked better than expected”*
**Durability**6%
*“its lasted pretty well ordered new one to do touch ups”*
**Instructions/User Manual/Troubleshooting**3%
*“Followed the directions as specified”*
**Size-Overall**3%
*“The size was perfect”*
**Coverage**3%
*“it covered fine with extra”*
### **What buyers complain about **
**Durability**23%
*“Didnt last very long”*
**Ease Of Cleaning**18%
*“Very messy”*
**Value For Money**8%
*“this product is very expensive”*
**Coverage**7%
*“It barely covered any”*
**Ease Of Use**3%
*“Did our bathroom is a little bit of a challenge”*
**Functionality-Overall**3%
*“This product does not work well”*
**Color**3%
*“Over the past four years the grout became uneven in color”*
**Paint Quality**3%
*“Grout paint”*
**Thickness**2%
*“u definitely aren't going to get thickness out of it”*
**Advertised Vs Actual Product**2%
*“does not do what it says”*
### **Top return reasons **
**Color**47%
**Functionality-Overall**14%
**Size-Overall**8%
**Paint Quality**8%
**Advertised Vs Actual Product**5%
**Defective Material/Parts**4%
**Adhesion/Stickiness**3%
**Leak-Proof**2%
**Ease Of Use**1%
**Coverage**1%
## **Common questions**
- **Is black grout profitable to sell on Amazon United States?**
- The niche generates $65K/yr across 5 tracked products. 90-day search growth is -6.7%. Flapen's verdict: Skip it (36/100).
- **How competitive is the black grout niche?**
- 2 brands and 3 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in black grout?**
- Top complaints mined from reviews: Durability, Ease Of Cleaning, Value For Money. The return rate is 3.2%.
- **When does demand for black grout peak?**
- Demand peaks in Feb–Sep; the busiest month runs 2.3× the quietest.
- **What does it cost to enter the black grout niche?**
- Listings span $8.90–$23.07; the average listing price is $14.27 (sweet spot $15–$100). The average incumbent carries 6,430 reviews — the moat a new listing must climb.
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