Skip to content

延長コード 10m

延長コード 10m clears our launch bar: a $47.0M/yr market growing +5.6% this quarter with returns at 0.5%.

Flapen Score

66
Launch it

Top 11% of 4,191 DIY・工具・ガーデン niches · +9 vs the category median of 57

Market size 100Growth 32Conversion 66Competition 75Returns 98Price range 0Avg price 0Brand share 84Review moat 55Quality gap 75
This niche Category average · 4,191 niches

Is 延長コード 10m profitable on Amazon?

According to Flapen's Amazon Japan niche tracking, 延長コード 10m is a ¥47.0M/yr Amazon Japan market (440K searches/yr). The top 5 brands hold 51% of demand. Verdict: Launch it — 66/100.

延長コード 10m: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Yes. Search demand moved +5.6% over the last 90 days and 5.9% of searches end in a purchase.

¥47.0M

revenue / yr

Units sold / yr30K
Search volume / yr+5.6%440K
Conversion rate5.9%
Avg price¥1796.32

Who owns the niche?

The top 5 brands hold 51% of demand, so 49% of the market is open.

49%

open market share

Brands · sellers23 · 90
Top-5 product click share40%
Open market49%
Avg brand age47 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 · 34 products

Sponsored placement71%
New entrants (1y)7· 6 succeeded
Avg rating4.3★
Avg reviews1,295

Top 延長コード 10m 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 40% of clicks — established leaders, but buyers still shop beyond them.

¥0¥1.9M¥3.8M¥5.6M¥7.5M1101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

23 falling

Sellers

90

Top-5 brand share

51%

Top 20: 97%

Top-5 click share

40%

Top 20: 85%

Open market

43%

  • キモチ(Kimoc)19%
  • サンワサプライ(Sanwa Supply)10%
  • オーム(OHM)9%
  • KOTUBAME7%
  • OKAWASI6%
  • AKIRARI6%

延長コード 10m demand & seasonality

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

Volume440KCVR5.9%Products34Brands23Top 5 Brands51%OOS Rate3.5%Rating4.3★Reviews1,295Avg BSR#57
15K10KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Prime Day '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Top 延長コード 10m search terms shoppers use

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

  • 延長コード 10m290K/yr
  • えんちようこーど 10m36K/yr
  • 電源コード 10m17K/yr
  • 延長コード 10m 屋外17K/yr
  • 10m 延長コード14K/yr
  • 延長コード 屋外 10m10K/yr
  • 屋外 延長コード 10m9K/yr
  • 電源ケーブル 10m5K/yr
  • 延長ケーブル 10m6K/yr
  • 電源延長コード 10m5K/yr

What reviews say buyers love and hate about 延長コード 10m

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

What buyers love

75% of reviews
使用の容易さ20%

お手軽です。

コストパフォーマンス12%

コスパがいい

総合品質11%

新品はやはり良い

強さ7%

丈夫

柔らかい感触6%

思っていたよりソフト

What buyers complain about

61% of reviews
総合品質11%

ゴミ

厚み11%

ケーブルは太く固め。

耐久性8%

耐久性難あり

サイズ全体8%

ちょっと長かったので、余分な部分をカットしタップを付けました。

可燃性5%

発火しませんように

延長コード 10m return rate & reasons

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

0.5%

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厚み
19%
2認証
14%
3サイズ全体
14%
4接続性 - 全体
7%
5広告と実際の製品の違い
6%

Common 延長コード 10m questions

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

Flapen scores 延長コード 10m 66/100 on Amazon Japan — Launch it. The niche generates ¥47.0M/yr across 34 tracked products. 6 of 7 products launched in the last 360 days are still selling. Search demand moved +5.6% over the last 90 days.
Search demand for 延長コード 10m on Amazon Japan is steady year-round — the busiest month runs 1.4× the quietest.