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内径9mm ホース

Worth a look

Shows low returns (0.3%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 49Growth 84Conversion 34Competition 51Returns 99Price range 0Avg price 0Brand share 38Review moat 93Quality gap 82

Returns

Incredible0.3%

return rate — above 5% kills the launch gate

Review moat

Great141.25

avg incumbent reviews — the moat a new listing must climb

Growth

Great+81.5%

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

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Competition

Good54%

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

Market size

Okay¥267K

¥267K/yr · 9K searches

Brand share

Okay82%

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

Conversion

Okay2.7%

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

Avg price

Bad¥1077.83

avg listing price — sweet spot $15–$100

Price range

Bad¥407.56–¥2140.50

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

According to Flapen's Amazon Japan niche tracking, 内径9mm ホース is a ¥267K/yr Amazon Japan market (9K searches/yr). The top 5 brands hold 82% of demand. Verdict: Worth a look — 57/100.

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

内径9mm ホース market data

Units sold / yr
250–500
avg 0–100/product
Revenue / yr
¥269K–¥539K
units × avg price
Conversion rate
2.7%
Avg BSR
#109
Page quality
0%
Prime
70%
Sponsored
45%
Out of stock
0.4%
Avg brand age
58 months
Avg seller age
187 days

Competition & brand share

The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.

Brands

12 rising

Sellers

51

Top-5 brand share

82%

Top 20: 100%

Top-5 click share

54%

Top 20: 100%

Open market

14%

  • タカギ(Takagi)35%
  • SKD31%
  • NoA-Spearfishing-7%
  • MOCOXYKLXY5%
  • キジマ(Kijima)4%
  • MUYYIKA4%
  • Open — no brand owns it (6 brands, 14%)

Demand

Weekly Amazon search volume, last 51 weeks — +81.5% search growth over the last 90 days.
400300Holiday '25Spike '26Aug '25Oct '25Nov '25Jan '26Mar '26May '26

Top 内径9mm ホース 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%10%¥27K20%¥53K30%¥80K40%¥107K1101001K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 20 tracked products in this niche — three views at once, no toggling.

What buyers say about 内径9mm ホース

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

What buyers love

総合品質17%

“品質は良い。十分なコスパだ。”

使用の容易さ16%

“なかなか便利です”

コストパフォーマンス13%

“コスパ良し”

耐久性9%

“分解して裂けたホース部分をハサミなどで切ってからつけ直すとまた新品と同等に使えるので、長く使えると思います。”

厚み7%

“硬さ、長さ、太さ最高にいい感じです”

スプレー/フロー7%

“ライターで炙ればホースはスムーズに入り、水漏れもありません。”

柔らかい感触7%

“柔らかく、折れ曲がりにくいです。”

調整可能性/回転機能/リクライニング機能 7%

“簡単に切って調整できました。”

漏れ防止3%

“水漏れもありません”

サイズ全体3%

“サイズピッタリ”

What buyers complain about

排水25%

“汎用のホースがつけないのでこれしかない”

25%

“私はグレー色を選びましたが、ブルー色と同じ金額だったら良かったのにな...と思いました。”

コストパフォーマンス25%

“お値段が高すぎるのでリピは無しです。”

厚み8%

“細いけど結構しっかりしてますね”

Top return reasons

サイズ全体43%
互換性-全体14%
厚み10%
不良材料/部品10%
使用の容易さ7%
追加アイテム/添付ファイル7%
硬い感覚5%
材料の品質5%

Common questions

Is 内径9mm ホース profitable to sell on Amazon Japan?
The niche generates ¥267K/yr across 20 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +81.5%. Flapen's verdict: Worth a look (57/100).
How competitive is the 内径9mm ホース niche?
12 brands and 51 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 82% of demand.
What do buyers complain about in 内径9mm ホース?
Top complaints mined from reviews: 排水, 色, コストパフォーマンス. The return rate is 0.3%.
What does it cost to enter the 内径9mm ホース niche?
Listings span ¥407.56–¥2140.50; the average listing price is ¥1077.83 (sweet spot $15–$100). The average incumbent carries 141 reviews — the moat a new listing must climb.