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Naniwa

Fail

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

Flapen Score
45
45 / 100
Ranks 5,778 of 9,536 Tools & Home Improvement niches · −3 vs the category median of 48
Market size
$794K/yr183K searches / yr
90-day growth
+16.1%search demand this quarter
Competition
73%top-5 click share · 2 brands · 95 sellers

Flapen Score

Naniwa against its category

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

45Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Naniwa market on Amazon at a glance

Shoppers on Amazon United States searched for Naniwa 183K times last year and spent an estimated $794K. All 2 brands take every click. Demand peaks in Aug–Nov–Dec. Flapen scores it 45 out of 100, a Fail.

01 · Demand

4.4% of searches ended in a purchase last week.

Shoppers searched for this 183K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. In the latest week, 4.4% of those searches ended in a purchase. Searches in the last 90 days moved +16.1% against the 90 days before. Searches, conversion and average price together put the market at an estimated $794K a year.

Searches, last 12 months
183K
Growth, 90 days vs prior 90
+16.1%
Conversion, latest week
4.4%
Market size, estimated
$794Ka year
Peak month
December2.9× the quietest month
Top search term
shapton sharpening stones53K searches a year

02 · Price

A sale here is worth $98.75.

Listings sell for $98.75 on average, from $43.97 to $230.13. Amazon reports units sold in ranges. This niche sold 6K to 8K a year. The average listing sells 500 to 750 of them. At $98.75 that is $49K to $74K a year per listing.

Average price
$98.75inside the $15 to $100 sweet spot
Price range
$43.97–$230.13
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
6K–8K
Units per listing a year
500–750
Revenue per listing a year
$49K–$74K
Returns
1.1%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is reviews.

62% 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 #219 within Sharpening Stones. It carries 2,052 reviews at 4.66 stars, so a new listing needs social proof before a better product.

Sponsored listings
62%
Prime listings
100%
Out of stock, average day
0.0%
Average rank
#219in Sharpening Stones
Average rating
4.66 starsAmazon United States average 4.42 stars
Average reviews
2,052per listing
Listings tracked
13

04 · Newcomers

Amazon counts 1 of last year's 1 launches as successful.

1 products launched here in the last 12 months. Amazon counts 1 of them as successful launches, new products that hit its first-year sales bar. The brands on the shelf have sold for 70 months on average, so the names here are established.

Launched, last 12 months
1
Successful launches
1Amazon's first-year sales bar
Average brand age
70 months

Products

Top Naniwa 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 73% of clicks. A locked shelf that new listings rarely crack.

$0$79K$159K$238K$318K101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

2 rising

Sellers

95

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

73%

Top 20: 100%

Open market

0%

  • Shapton93%
  • Someie7%

Demand

Naniwa search demand

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

8K6KPrime Day '25Spike '25Black Friday '25Spike '26JanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJunJul

Peak months: Aug, Nov, Dec · busiest ÷ quietest = 2.9×

Search terms

Top Naniwa search terms shoppers use

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

  • shapton sharpening stones53K/yr
  • shapton35K/yr
  • shapton pro 100027K/yr
  • (shapton)3K/yr
  • shapton kuromaku11K/yr
  • shapton 100010K/yr
  • shapton pro10K/yr
  • shapton glass stone8K/yr
  • shapton kuromaku 10005K/yr
  • shapton whetstone8K/yr

Reviews and returns

What reviews say buyers love and hate about Naniwa

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

25%of positive reviews mention “Quality-Overall”
25%of negative reviews mention “Instructions/User Manual/Troubleshooting”
1.1%of orders come back
“where can I find instructions in English since I Am brand new at this”
A buyer, on “Instructions/User Manual/Troubleshooting”25% 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.

17 topics

NegativePositive

FAQ

Common Naniwa questions

Answered from the same tracked data.