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Japanese Whetstone

Fail

The top 5 brands take 100% of clicks, so Japanese Whetstone is a Fail.

Flapen Score
37
37 / 100
Ranks 8,329 of 9,536 Tools & Home Improvement niches · −11 vs the category median of 48
Market size
$64K/yr45K searches / yr
90-day growth
-8.7%search demand this quarter
Competition
79%top-5 click share · 5 brands · 91 sellers

Flapen Score

Japanese Whetstone against its category

The dotted line is the Tools & Home Improvement average. Past it, Japanese Whetstone is stronger. Inside it, weaker.

37Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Japanese Whetstone market on Amazon at a glance

Shoppers on Amazon United States searched for Japanese Whetstone 45K times last year and spent an estimated $64K. All 5 brands take every click. Demand peaks in Jan–Dec. Flapen scores it 37 out of 100, a Fail.

01 · Demand

4.2% of searches ended in a purchase last week.

Shoppers searched for this 45K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. In the latest week, 4.2% of those searches ended in a purchase. Searches in the last 90 days moved -8.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $64K a year.

Searches, last 12 months
45K
Growth, 90 days vs prior 90
-8.7%
Conversion, latest week
4.2%
Market size, estimated
$64Ka year
Peak month
December2.5× the quietest month
Top search term
king whetstone26K searches a year

02 · Price

A sale here is worth $33.83.

Listings sell for $33.83 on average, from $24.24 to $49.69. Amazon reports units sold in ranges. This niche sold 2K to 3K a year. The average listing sells 100 to 250 of them. At $33.83 that is $3K to $8K a year per listing.

Average price
$33.83inside the $15 to $100 sweet spot
Price range
$24.24–$49.69
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
2K–3K
Units per listing a year
100–250
Revenue per listing a year
$3K–$8K
Returns
1.2%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is ads and reviews.

93% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #145 within Sharpening Stones. It carries 3,332 reviews at 4.56 stars, so a new listing needs social proof before a better product.

Sponsored listings
93%
Prime listings
100%
Out of stock, average day
0.0%
Average rank
#145in Sharpening Stones
Average rating
4.56 starsAmazon United States average 4.42 stars
Average reviews
3,332per listing
Listings tracked
14

04 · Newcomers

Brands here are established.

The brands on the shelf have sold for 73 months on average, so the names here are established.

Launched, last 12 months
0
Successful launches
0Amazon's first-year sales bar
Average brand age
73 months

Products

Top Japanese Whetstone products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Competition

Competition: brands, sellers & click share

The top 5 products take 79% of clicks. A locked shelf that new listings rarely crack.

$0$6K$13K$19K$26K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

5 flat

Sellers

91

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

79%

Top 20: 100%

Open market

0%

  • KING57%
  • King30%
  • BJDesign8%
  • Sharp Pebble2%
  • Intelitopia2%
  • Open — no brand owns it (0%)

Demand

Japanese Whetstone search demand

Weekly searches over the year, seasonality beneath. Pick a range.

4K3KSpike '24Holiday '24Prime Day '25Black Friday '25SepDecMarJunAugNovMarMay

Peak months: Jan, Dec · busiest ÷ quietest = 2.5×

Search terms

Top Japanese Whetstone search terms shoppers use

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

  • king whetstone26K/yr
  • king sharpening stone11K/yr
  • king stone5K/yr
  • king 1000/6000 whetstone3K/yr

Reviews and returns

What reviews say buyers love and hate about Japanese Whetstone

We read the reviews and the return reasons for every product selling here.

25%of positive reviews mention “Quality-Overall”
24%of negative reviews mention “Quality-Overall”
1.2%of orders come back
“Not great quality”
A buyer, on “Quality-Overall”24% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

16 topics

NegativePositive

FAQ

Common Japanese Whetstone questions

Answered from the same tracked data.