Skip to content

延長コード 1.5m 1口

延長コード 1.5m 1口 shows low returns (0.4%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Flapen Score

58
Worth a look

Top 45% of 4,191 DIY・工具・ガーデン niches · +1 vs the category median of 57

Market size 65Growth 48Conversion 59Competition 64Returns 98Price range 0Avg price 0Brand share 55Review moat 48Quality gap 77
This niche Category average · 4,191 niches

Is 延長コード 1.5m 1口 profitable on Amazon?

According to Flapen's Amazon Japan niche tracking, 延長コード 1.5m 1口 is a ¥626K/yr Amazon Japan market (13K searches/yr). The top 5 brands hold 72% of demand. Demand peaks in Jul–Dec. Verdict: Worth a look — 58/100.

延長コード 1.5m 1口: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Worth a look. Search demand moved +18.2% over the last 90 days and 5.1% of searches end in a purchase.

¥626K

revenue / yr

Units sold / yr1K
Search volume / yr+18.2%13K
Conversion rate5.1%
Avg price¥970.25

Who owns the niche?

The top 5 brands hold 72% of demand, so 28% of the market is open.

28%

open market share

Brands · sellers16 · 83
Top-5 product click share46%
Open market28%
Avg brand age59 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.3★ — the gap to enter on.

0/100

page quality · 30 products

Sponsored placement77%
New entrants (1y)3· 1 succeeded
Avg rating4.3★
Avg reviews1,707

Top 延長コード 1.5m 1口 products & what they sell for

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

Competition: brands, sellers & click share

The top 5 products take 46% of clicks — established leaders, but buyers still shop beyond them.

¥0¥25K¥50K¥75K¥100K1101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

16 rising

Sellers

83

Top-5 brand share

72%

Top 20: 100%

Top-5 click share

46%

Top 20: 91%

Open market

23%

  • サンワサプライ(Sanwa Supply)23%
  • エレコム(ELECOM)20%
  • AKIRARI12%
  • uxcell9%
  • KOZUMUWAN8%
  • オーム(OHM)5%

延長コード 1.5m 1口 demand & seasonality

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

Volume13KCVR5.1%Products30Brands16Top 5 Brands72%OOS Rate3.0%Rating4.3★Reviews1,707Avg BSR#86
450350Holiday '24Spike '25Prime Day '25Black Friday '25Holiday '25Spike '26Prime Day '26DecMarJunAugNovMarMay

Peak months: Jul, Dec · busiest ÷ quietest = 1.7×

What reviews say buyers love and hate about 延長コード 1.5m 1口

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

What buyers love

85% of reviews
使用の容易さ23%

普通に使えます

コストパフォーマンス18%

お値段以上です

総合品質12%

普通に良い製品です。

サイズ全体8%

サイズ良好

強さ7%

丈夫そう

What buyers complain about

87% of reviews
コストパフォーマンス18%

ちょっと高いかな

加熱14%

可動式差し込み部の異常過熱で、

総合品質11%

安いけど普通に使えるので全く問題なし

充電10%

3回に一回は全く反応せず充電できません

使用の容易さ8%

狭いところでは使いづらい

延長コード 1.5m 1口 return rate & reasons

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

0.4%

Return rate

0%

Fixable by listing

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

1サイズ全体
26%
2互換性-全体
11%
3接続性 - 全体
11%
4重い
9%
5機能全体
9%

Common 延長コード 1.5m 1口 questions

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

Flapen scores 延長コード 1.5m 1口 58/100 on Amazon Japan — Worth a look. The niche generates ¥626K/yr across 30 tracked products. 1 of 3 products launched in the last 360 days are still selling. Search demand moved +18.2% over the last 90 days.
Search demand for 延長コード 1.5m 1口 on Amazon Japan peaks in Jul–Dec, where the busiest month runs 1.7× the quietest.