---
title: "Black Rock — $181K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/black-rock"
last_updated: "2026-08-09T16:15:25.103Z"
locale: en
meta:
description: "Niche score 61/100 · $181K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 61/100 · $181K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Black Rock — $181K/yr Amazon US Niche (2026) - Flapen"
---
# **black rock**
**Worth a look**
Shows a sweet-spot price point ($26.71 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 37Growth 74Conversion 50Competition 71Returns 68Price range 87Avg price 95Brand share 64Review moat 48Quality gap 38
**Avg price**
**Incredible****$26.71**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$6.68–$86.55**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Good****+57.7%**
90-day search growth — must beat 0% to launch
**Competition**
**Good****42%**
top-5 click share — leaders hold, buyers still browse
**Returns**
**Good****2.3%**
return rate — above 5% kills the launch gate
**Brand share**
**Good****66%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Okay****4.0%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Okay****1,709.36**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Market size**
**Okay****$181K**
$181K/yr · 171K searches
According to Flapen's Amazon United States niche tracking, black rock is a $181K/yr Amazon United States market (171K searches/yr). The top 5 brands hold 66% of demand. Demand peaks in Apr–May–Jun. Verdict: Worth a look — 61/100.
Data updated Jul 15, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **black rock market data**
- **Units sold / yr**
- **8K–10K**
- avg 250–500/product
- **Revenue / yr**
- **$214K–$267K**
- units × avg price
- **Conversion rate**
- **4.0%**
- **Avg BSR**
- **#46**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **91%**
- **Out of stock**
- **0.9%**
- **Avg brand age**
- **45 months**
- **Avg seller age**
- **201 days**
## **Competition & brand share**
The top 5 products take 42% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**18 **▼falling
**Sellers**
**26**
**Top-5 brand share**
**66%**
Top 20: 100%
**Top-5 click share**
**42%**
Top 20: 89%
**Open market**
**29%**
- FANTIAN23% - YISZM16% - Mulctun11% - TOPEMAI10% - GASPRO7% - NUPICK5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +57.7% search growth over the last 90 days.
5K3KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May, Jun · busiest ÷ quietest = 2.3×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/black-rock/trend)
## **Top black rock search terms**
- **black rocks**32K/yr+32.6%3.3% conv. - **black rocks for landscaping**16K/yr+174.4%1.7% conv. - **black river rocks**18K/yr+36.6%5.6% conv. - **black stones**18K/yr+20.3%1.8% conv. - **black landscape rock**9K/yr+177.4%0.8% conv. - **black rock**14K/yr+20.6%2.6% conv. - **black pebbles**13K/yr+30.5%3.9% conv. - **black rocks for planters**11K/yr+21.8%6.5% conv. - **black river rocks for landscaping**7K/yr+235.7%3.6% conv. - **black river rock**5K/yr+117.2%4.3% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/black-rock/search-terms)
## **Top black rock 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%4%$7K8%$15K12%$22K16%$29K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**FANTIAN 5 Pounds Black Natural Decorative River Pebbles 2-3 Inch Black Polished Decorative Pebbles for Garden Landscaping Home Dcor Outdoor Paving River Rocks Rocks for Painting**FANTIAN**$14.44**4.5★701 rev](https://www.amazon.com/dp/B08TQSMTJL) [2**Black River Rocks - Large Polished Black Pebbles for Plants & Garden Decorative Stones 1-2 Inch 15 Pound**TOPEMAI**$34.09**4.6★374 rev](https://www.amazon.com/dp/B0B6PHBKNX) [3**YISZM 2lbs Black Pebbles for Plants 1-2 Inch High Polished Natural River Rocks for Landscaping Decorative Stones Vase Filler Fish Tank Aquariums Garden Outdoor and Indoor DIY**YISZM**$9.45**4.6★1,244 rev](https://www.amazon.com/dp/B0BDDK8XNC) [4**GASPRO 15 lb Black River Rocks for Landscaping Polished Black Pebbles for Potted Plants & Vases Large 1-2 Inch Decorative Stones for Garden Beds Planters & Aquariums Decor**GASPRO**$26.84**4.6★1,004 rev](https://www.amazon.com/dp/B087M8VP1P) [5**Mulctun 45LB Polished Black Pebbles 1/4 - 3/4 Small Black River Rocks for Landscaping Natural Gravel Smooth Decorative Stones Dressing for Vases Planters Garden Outdoor Indoor**Mulctun**$69.63**4.5★271 rev](https://www.amazon.com/dp/B0D1KGRHSK)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Rahato 20lbs Black Rocks for Planters 3-4 Inch Decorative Rocks for Potted Plants Polished Garden Stones for Outdoor Landscaping Walkways Yard River Rocks for Flower Pots Vase**Rahato**$35.16**41 rev4mo ago](https://www.amazon.com/dp/B0GQLZDDL9) [**Mengdewei 12 lbs Black River Rocks for Landscaping 2-3 Inch Polished Pebbles for Garden Decorative Stones for Plants Succulents Aquarium Fish Tank Outdoor Yard Walkways & Paving**Mengdewei**$25.19**24 rev6mo ago](https://www.amazon.com/dp/B0GFT6YNPT) [**Pulovin 20 lbs Black Stones for Plants Indoor 3-4 Inch Decorative River Rocks for Plants Flower Pots Vase Polished Garden Stones for Outdoor Landscaping Walkways Yard**Pulovin**$34.30**71 rev7mo ago](https://www.amazon.com/dp/B0G3X2CSCF) [**16lb Black River Rocks 1-2 Inch Pebbles for Indoor Plants Natural Polished Aquarium Gravel Decorative Rocks for Outdoor Landscaping Succulent Garden Vases Fillers Bird Baths**NUPICK**$24.65**461 rev1y ago](https://www.amazon.com/dp/B0F6T91WNW) [**NUPICK 3lb River Rocks for Plants Indoor 1/5 Inch Black Pebbles for Vases Fillers Decorative Pea Gravel for Fish Tank Natural Polished Stones for Succulent Bonsai Landscaping Bird Baths**NUPICK**$9.85**142 rev1y ago](https://www.amazon.com/dp/B0F1CJ2SD2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Rahato 20lbs Black Rocks for Planters 3-4 Inch Decorative Rocks for Potted Plants Polished Garden Stones for Outdoor Landscaping Walkways Yard River Rocks for Flower Pots Vase**Rahato**$35.16**4.5★**▲ 170%**](https://www.amazon.com/dp/B0GQLZDDL9) [**Mengdewei 12 lbs Black River Rocks for Landscaping 2-3 Inch Polished Pebbles for Garden Decorative Stones for Plants Succulents Aquarium Fish Tank Outdoor Yard Walkways & Paving**Mengdewei**$25.19**4.3★**▲ 157%**](https://www.amazon.com/dp/B0GFT6YNPT) [**Pulovin 20 lbs Black Stones for Plants Indoor 3-4 Inch Decorative River Rocks for Plants Flower Pots Vase Polished Garden Stones for Outdoor Landscaping Walkways Yard**Pulovin**$34.30**4.2★**▲ 117%**](https://www.amazon.com/dp/B0G3X2CSCF) [**Glofish Aquarium Gravel Solid Black 5-Pound Bag**GloFish**$8.89**4.6★**▲ 100%**](https://www.amazon.com/dp/B007TGMLXM) [**GreatBuddy 15-lb Black River Rocks for Landscaping 1-2 Inches Black Polished Pebbles Decorative Rocks for Plants Indoor& Outdoor Garden Landscaping Aquariums Vases Potted Plants Home Decor**GreatBuddy**$25.38**4.6★**▲ 43%**](https://www.amazon.com/dp/B0DK747Z93)
**~~View all trending →~~**
## **What buyers say about black rock**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“Worth the price, good product”*
**Value For Money**13%
*“worth the purchase”*
**Color**11%
*“Great color”*
**Leather Quality**10%
*“Made the leather soft”*
**Advertised Vs Actual Product**9%
*“Just as advertised”*
**Size-Overall**6%
*“Good size”*
**Design-Overall**5%
*“Very aesthetic, looks nice”*
**Brightness/Shine/Glow**4%
*“Sleek & shiny”*
**Ease Of Use**4%
*“they are easy on the eyes also”*
**Plant Growth**4%
*“worked great in my planter to keep my cats from digging up my plant”*
### **What buyers complain about **
**Size-Overall**31%
*“The bag is very small”*
**Value For Money**20%
*“Too expensive”*
**Color**7%
*“Loses color”*
**Advertised Vs Actual Product**4%
*“Does not fit description and misleading”*
**Quality-Overall**3%
*“These are of uneven quality, a lot of broken stones and random colors”*
**Functionality-Overall**2%
*“Did not work for me”*
**Weight Light**2%
*“And it did not weigh 5 lbs”*
**Durability**2%
*“Rusted with 2 days”*
**Weight Heavy**2%
*“Rocks are heavy so not many in a package to get you to 20 lbs”*
**Flatness**2%
*“2 were flat the rest rounded”*
### **Top return reasons **
**Size-Overall**70%
**Value For Money**10%
**Advertised Vs Actual Product**8%
**Color**3%
**Functionality-Overall**2%
**Weight Heavy**1%
**Quality-Overall**1%
**Defective Material/Parts**1%
**Material Quality**1%
**Brightness/Shine/Glow**1%
## **Common questions**
- **Is black rock profitable to sell on Amazon United States?**
- The niche generates $181K/yr across 33 tracked products. 4 of 6 products launched in the last 360 days are still selling. 90-day search growth is +57.7%. Flapen's verdict: Worth a look (61/100).
- **How competitive is the black rock niche?**
- 18 brands and 26 sellers compete. The top 5 products take 42% of clicks and top 5 brands hold 66% of demand.
- **What do buyers complain about in black rock?**
- Top complaints mined from reviews: Size-Overall, Value For Money, Color. The return rate is 2.3%.
- **When does demand for black rock peak?**
- Demand peaks in Apr–May–Jun; the busiest month runs 2.3× the quietest.
- **What does it cost to enter the black rock niche?**
- Listings span $6.68–$86.55; the average listing price is $26.71 (sweet spot $15–$100). The average incumbent carries 1,709 reviews — the moat a new listing must climb.
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