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maruto hasegawa kosakujo

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Market size 52Growth 22Conversion 7Competition 60Returns 98Price range 0Avg price 0Brand share 0Review moat 91Quality gap 79

Returns

Incredible0.5%

return rate — above 5% kills the launch gate

Review moat

Great186.37

avg incumbent reviews — the moat a new listing must climb

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Competition

Good49%

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

Market size

Good¥324K

¥324K/yr · 22K searches

Growth

Bad-6.9%

90-day search growth — must beat 0% to launch

Conversion

Bad0.6%

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

Brand share

Bad100%

top-5 brand share — brand-locked demand

Avg price

Bad¥2590.47

avg listing price — sweet spot $15–$100

Price range

Bad¥1165.22–¥6425.45

cheapest to priciest tracked listing — scored on the share inside $15–$100

According to Flapen's Amazon Japan niche tracking, maruto hasegawa kosakujo is a ¥324K/yr Amazon Japan market (22K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Dec. Verdict: Skip it — 43/100.

Data updated Jul 30, 2026 · scored weekly · How we score niches

maruto hasegawa kosakujo market data

Units sold / yr
250–500
avg 0–100/product
Revenue / yr
¥648K–¥1.3M
units × avg price
Conversion rate
0.6%
Avg BSR
#56
Page quality
0%
Prime
90%
Sponsored
17%
Out of stock
0.2%
Avg brand age
78 months
Avg seller age
182 days

Competition & brand share

The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.

Brands

4 flat

Sellers

68

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

49%

Top 20: 91%

Open market

0%

  • Maruto Hasegawa kosakujo82%
  • KEIBA12%
  • ノーブランド品3%
  • GENERIC2%
  • Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 90 weeks — -6.9% search growth over the last 90 days.
1K600Holiday '24Spike '25Black Friday '25Spike '26Prime Day '26DecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Dec · busiest ÷ quietest = 1.9×

Top maruto hasegawa kosakujo search terms

  • keiba10K/yr
  • ケイバ ペンチ6K/yr
  • マルト長谷川工作所4K/yr
  • ケイバ3K/yr
  • maruto hasegawa kosakujo143/yr
All search terms

Top maruto hasegawa kosakujo 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%3%¥10K6%¥19K9%¥29K12%¥39K1101001K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

All 24 tracked products in this niche — three views at once, no toggling.

What buyers say about maruto hasegawa kosakujo

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

What buyers love

使用の容易さ49%

“便利に使えます”

総合品質15%

“使えばその良さがわかる一品”

厚み8%

“先の細さもちょうどよくて”

握り心地8%

“グリップの握りやすさはさすがケイバさんだと思います。”

測定/読み取り精度2%

“細かい作業時に欠かせない1本です。作りが精密、かつしっかりつしているので使い続けても合わせがずれないし、手も疲れません。”

使用説明書/ユーザーマニュアル/トラブルシューティング2%

“細かい作業に最適ですー”

コストパフォーマンス2%

“リーズナブルに手に入り、大満足”

傷に強い2%

“ギザなしなので傷が入らない。”

2%

“ピンクとかおしゃれで可愛らしい色があればもっと良いです。”

耐久性2%

“耐久性に期待”

What buyers complain about

総合品質18%

“最近品質が下がってる気がします。”

使用の容易さ12%

“使いにくい面がありますが”

サイズ全体11%

“小さいです”

商品の状態9%

“中古品と思うほどです。”

握り心地9%

“購入後に毎回グリップに穴あけ加工するのが地味に面倒。”

コストパフォーマンス9%

“高いばかやろー”

メンテナンスと修理5%

“メーカー連絡するも、「金属疲労だから仕方ない...修理 交換 もしない。”

耐久性5%

“2026年3/24折れた...使用用途は新聞閉じるホチキス針山潰し、打ち損ねた針除去。”

平坦さ5%

“平ヤットコだった”

厚み3%

“意外と細すぎて使いにくい面がありますが”

Top return reasons

サイズ全体47%
不良材料/部品20%
硬い感覚20%
匂い7%
生锈/腐食する7%

Common questions

Is maruto hasegawa kosakujo profitable to sell on Amazon Japan?
The niche generates ¥324K/yr across 30 tracked products. 90-day search growth is -6.9%. Flapen's verdict: Skip it (43/100).
How competitive is the maruto hasegawa kosakujo niche?
4 brands and 68 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in maruto hasegawa kosakujo?
Top complaints mined from reviews: 総合品質, 使用の容易さ, サイズ全体. The return rate is 0.5%.
When does demand for maruto hasegawa kosakujo peak?
Demand peaks in Dec; the busiest month runs 1.9× the quietest.
What does it cost to enter the maruto hasegawa kosakujo niche?
Listings span ¥1165.22–¥6425.45; the average listing price is ¥2590.47 (sweet spot $15–$100). The average incumbent carries 186 reviews — the moat a new listing must climb.