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.

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.

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

Good42%

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

Returns

Good2.3%

return rate — above 5% kills the launch gate

Brand share

Good66%

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

Conversion

Okay4.0%

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

Review moat

Okay1,709.36

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.5★

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

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

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.

Peak months: Apr, May, Jun · busiest ÷ quietest = 2.3×

Open Trend

Top black rock search terms

black rocks32K/yr +32.6%3.3% conv.
black rocks for landscaping16K/yr +174.4%1.7% conv.
black river rocks18K/yr +36.6%5.6% conv.
black stones18K/yr +20.3%1.8% conv.
black landscape rock9K/yr +177.4%0.8% conv.
black rock14K/yr +20.6%2.6% conv.
black pebbles13K/yr +30.5%3.9% conv.
black rocks for planters11K/yr +21.8%6.5% conv.
black river rocks for landscaping7K/yr +235.7%3.6% conv.
black river rock5K/yr +117.2%4.3% conv.

All 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.

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

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$14.444.5★701 rev

Black River Rocks - Large Polished Black Pebbles for Plants & Garden Decorative Stones 1-2 Inch 15 Pound

TOPEMAI$34.094.6★374 rev

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$9.454.6★1,244 rev

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$26.844.6★1,004 rev

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$69.634.5★271 rev

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$35.1641 rev

4mo ago

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$25.1924 rev

6mo ago

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$34.3071 rev

7mo ago

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$24.65461 rev

1y ago

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$9.85142 rev

1y ago

What buyers say about black rock

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

What buyers love

Quality-Overall18%

“Worth the price, good product”

Value For Money13%

“worth the purchase”

Color11%

“Great color”

Leather Quality10%

“Made the leather soft”

Advertised Vs Actual Product9%

“Just as advertised”

Size-Overall6%

“Good size”

Design-Overall5%

“Very aesthetic, looks nice”

Brightness/Shine/Glow4%

“Sleek & shiny”

Ease Of Use4%

“they are easy on the eyes also”

Plant Growth4%

“worked great in my planter to keep my cats from digging up my plant”

What buyers complain about

Size-Overall31%

“The bag is very small”

Value For Money20%

“Too expensive”

Color7%

“Loses color”

Advertised Vs Actual Product4%

“Does not fit description and misleading”

Quality-Overall3%

“These are of uneven quality, a lot of broken stones and random colors”

Functionality-Overall2%

“Did not work for me”

Weight Light2%

“And it did not weigh 5 lbs”

Durability2%

“Rusted with 2 days”

Weight Heavy2%

“Rocks are heavy so not many in a package to get you to 20 lbs”

Flatness2%

“2 were flat the rest rounded”

Top return reasons

Size-Overall70%

Value For Money10%

Advertised Vs Actual Product8%

Color3%

Functionality-Overall2%

Weight Heavy1%

Quality-Overall1%

Defective Material/Parts1%

Material Quality1%

Brightness/Shine/Glow1%

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.