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200v 延長コード

200v 延長コード shows a $5.1M/yr market, but pricing outside the sweet spot ($7663.92 avg) keeps it on the watch list.

Flapen Score

55
Worth a look

Ranks 2,433 of 4,191 DIY・工具・ガーデン niches · −2 vs the category median of 57

Market size 98Growth 36Conversion 18Competition 49Returns 94Price range 0Avg price 0Brand share 29Review moat 97Quality gap 90
This niche Category average · 4,191 niches

Is 200v 延長コード profitable on Amazon?

According to Flapen's Amazon Japan niche tracking, 200v 延長コード is a ¥5.1M/yr Amazon Japan market (47K searches/yr). The top 5 brands hold 87% of demand. Demand peaks in Jul. Verdict: Worth a look — 55/100.

200v 延長コード: 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 +8.5% over the last 90 days and 1.4% of searches end in a purchase.

¥5.1M

revenue / yr

Units sold / yr750
Search volume / yr+8.5%47K
Conversion rate1.4%
Avg price¥7663.92

Who owns the niche?

The top 5 brands hold 87% of demand, so 13% of the market is open.

13%

open market share

Brands · sellers11 · 102
Top-5 product click share55%
Open market13%
Avg brand age53 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.1★ — the gap to enter on.

0/100

page quality · 21 products

Sponsored placement38%
New entrants (1y)2· 0 succeeded
Avg rating4.1★
Avg reviews55

Top 200v 延長コード 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 55% of clicks — established leaders, but buyers still shop beyond them.

¥0¥255K¥510K¥765K¥1.0M1101001K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

11 falling

Sellers

102

Top-5 brand share

87%

Top 20: 100%

Top-5 click share

55%

Top 20: 100%

Open market

8%

  • トラスコ中山(TRUSCO)31%
  • ノーブランド品25%
  • NICHIDO13%
  • サンワサプライ(Sanwa Supply)10%
  • ハタヤ(HATAYA)9%
  • 鯛勝産業4%
  • Open — no brand owns it (5 brands, 8%)

200v 延長コード demand & seasonality

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

Volume47KCVR1.4%Products21Brands11Top 5 Brands87%OOS Rate11.1%Rating4.1★Reviews55Avg BSR#431
2K1KSpike '24Holiday '24Prime Day '25Black Friday '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jul · busiest ÷ quietest = 1.8×

Top 200v 延長コード search terms shoppers use

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

  • 200v 延長コード38K/yr
  • 単相200v 延長コード5K/yr
  • 三相200v 延長コード4K/yr

What reviews say buyers love and hate about 200v 延長コード

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

What buyers love

100% of reviews
総合品質30%

よく出来てます

効率20%

問題なく使えました。

持ち運びやすさ20%

旅行に行く時に便利です。

伸縮性/拡張性/弾力性10%

延長に便利

耐久性10%

思っていたままの商品で丈夫で使用し易いです。

What buyers complain about

100% of reviews
機能全体100%

このコードだけ100Vも200Vも通電しなかった

200v 延長コード return rate & reasons

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

1.0%

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
42%
2互換性-全体
21%
3コネクタ/ポート/プラグ
10%
4接続性 - 全体
10%
5出し機構
4%

Common 200v 延長コード questions

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

Flapen scores 200v 延長コード 55/100 on Amazon Japan — Worth a look. The niche generates ¥5.1M/yr across 21 tracked products. 0 of 2 products launched in the last 360 days are still selling. Search demand moved +8.5% over the last 90 days.
Search demand for 200v 延長コード on Amazon Japan peaks in Jul, where the busiest month runs 1.8× the quietest.