How competitive is the Rock Tumbler Refill niche on Amazon United States?

5 brands and 14 sellers compete in Rock Tumbler Refill on Amazon United States. The top 5 Rock Tumbler Refill products take 86% of clicks and its top 5 brands hold 100% of demand.

What do buyers complain about in Rock Tumbler Refill?

Rock Tumbler Refill buyers on Amazon United States complain most about Size-Overall, Quality-Overall, Functionality-Overall, the themes mined from the niche's reviews. Its return rate is 0.7%.

What does it cost to enter the Rock Tumbler Refill niche?

Rock Tumbler Refill sells for $26.23 on average on Amazon United States, inside our $15–$100 sweet spot. Listings span $12.64–$41.72. The average incumbent carries 6,231 reviews — the moat a new listing must climb.

Rock Tumbler Refill

brand-locked demand (top 5 brands take 100% of clicks) — Rock Tumbler Refill doesn't clear our bar today.

Flapen Score

Skip it

Ranks 239 of 262 Industrial & Scientific niches · −15 vs the category median of 52

This niche Category average · 262 niches

Is Rock Tumbler Refill profitable on Amazon?

According to Flapen's Amazon United States niche tracking, Rock Tumbler Refill is a $46K/yr Amazon United States market (19K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Skip it — 37/100.

Rock Tumbler Refill: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -8.1% over the last 90 days and 9.2% of searches end in a purchase.

$46K

revenue / yr

Units sold / yr2K

Search volume / yr-8.1%19K

Conversion rate9.2%

Avg price$26.23

Who owns the niche?

The top 5 brands hold 100% of demand, so 0% of the market is open.

open market share

Brands · sellers5 · 14

Top-5 product click share86%

Open market0%

Avg brand age69 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.7★ — the gap to enter on.

0/100

page quality · 12 products

Top Rock Tumbler Refill products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Top sellers

by 90-day click share

NATIONAL GEOGRAPHIC Rock Tumbler Grit and Polish Refill Kit - Tumbling Grit Media Polish Up to 20 lbs. of Rocks Works with any Rock Polisher & Tumbler Supplies

Price: $23.90
Rating: 4.7/5
Reviews: 18,734
Age: 9y ago

National Geographic Rock Tumbler Refill Kit with 1 Lb. Gemstone Mix

Price: $15.09
Rating: 4.6/5
Reviews: 6,150
Age: 10y ago

LARICEO Rock Tumbler Grit and Polish Refill Set 4-Step 3 lb

Price: $21.84
Rating: 4.8/5
Reviews: 290
Age: 1y ago

NATIONAL GEOGRAPHIC Rock Tumbler Grit & Media Refill Kit Rock Polishing Supplies Kit 4-Stage Silicon Carbide Bulk Grit 1.5 Pounds of Ceramic Pellets Stone Tumbling & GemFoam Polishing Media

Price: $38.93
Rating: 4.7/5
Reviews: 18,734
Age: 4y ago

National Geographic Rock Tumbler Refill Kit with 5 Lbs. Rough Rocks

Price: $35.43
Rating: 4.6/5
Reviews: 2,014
Age: 6y ago

Newest

by launch date

The Thames & Kosmos Rock Tumbler Refill Pack for use with The Thames & Kosmos Rock Tumbler Essential STEM Tool for Kids | Includes Rough Rocks Polishing Grit Jewelry Settings

Price: $12.64
Rating: 5.0/5
Reviews: 6
Age: 1y ago

LARICEO Rock Tumbler Grit and Polish Refill Set 4-Step 3 lb

Price: $21.84
Rating: 4.8/5
Reviews: 290
Age: 1y ago

LARICEO Rock Tumbler Grit and Polish Refill Set with Ceramic Media 4.5 lb

Price: $26.14
Rating: 4.7/5
Reviews: 268
Age: 2y ago

10 Pounds Rock Tumbler Grit Refill - Rock Polishing Grit Media Kit

Price: $32.65
Rating: 4.7/5
Reviews: 486
Age: 3y ago

WKTURN Rock Tumbler Grit Set - 4 Step Tumbling Media (Coarse Medium Grit Pre-Polished Final Polish) Set 2.0 for Any Brand of Rock Polisher

Price: $19.29
Rating: 4.5/5
Reviews: 796
Age: 4y ago

Competition: brands, sellers & click share

The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

5 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

86%

Top 20: 100%

Open market

Blue Marble82%
LARICEO12%
YHAspace3%
Thames & Kosmos2%
WKTURN1%

Rock Tumbler Refill demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume19KCVR9.2%Products12Brands5Top 5 Brands100%OOS Rate0.0%Rating4.7★Reviews6,231Avg BSR#156

Peak months: Jan, Nov, Dec · busiest ÷ quietest = 6.2×

Top Rock Tumbler Refill search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

rock tumbler refill kit7K/yr -13.3%3.5% conv.
national geographic rock tumbler refill6K/yr -5.8%11.9% conv.
rock tumbler refill6K/yr -3.9%5.2% conv.

What reviews say buyers love and hate about Rock Tumbler Refill

What buyers mention most, as a share of all reviews.

What buyers love

90% of reviews

Quality-Overall20%

“Good grit”

Advertised Vs Actual Product20%

“As advertised”

Value For Money18%

“works good for the money”

Efficiency8%

“WORKS WELL”

Ease Of Use6%

“EASY TO USE”

What buyers complain about

83% of reviews

Size-Overall19%

“Smaller than I thought”

Quality-Overall18%

“Disappointing performance from this product”

Functionality-Overall13%

“We purchased this and didn't work”

Brightness/Shine/Glow9%

“No shine to the stones”

Advertised Vs Actual Product6%

“Very deceptive and will not buy again”

Rock Tumbler Refill return rate & reasons

Why buyers send it back, as a share of all return requests.

0.7%

Return rate

46%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Advertised Vs Actual Product

21%

2Size-Overall

19%

3Value For Money

11%

4Product Condition

5Functionality-Overall

Common Rock Tumbler Refill questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Rock Tumbler Refill 37/100 on Amazon United States — Skip it. The niche generates $46K/yr across 12 tracked products. Search demand moved -8.1% over the last 90 days.