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20w Usb-c電源アダプタ Apple 純正

20w Usb-c電源アダプタ Apple 純正 shows low returns (0.5%), but pricing outside the sweet spot ($735.91 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 70Growth 19Conversion 60Competition 50Returns 98Price range 0Avg price 0Brand share 76Review moat 51Quality gap 83
This niche Category average · 4,191 niches

Is 20w Usb-c電源アダプタ Apple 純正 profitable on Amazon?

According to Flapen's Amazon Japan niche tracking, 20w Usb-c電源アダプタ Apple 純正 is a ¥730K/yr Amazon Japan market (19K searches/yr). The top 5 brands hold 59% of demand. Demand peaks in Jan–Feb–Mar–Oct–Nov–Dec. Verdict: Worth a look — 55/100.

20w Usb-c電源アダプタ Apple 純正: 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 -11.6% over the last 90 days and 5.2% of searches end in a purchase.

¥730K

revenue / yr

Units sold / yr750
Search volume / yr-11.6%19K
Conversion rate5.2%
Avg price¥735.91

Who owns the niche?

The top 5 brands hold 59% of demand, so 41% of the market is open.

41%

open market share

Brands · sellers13 · 49
Top-5 product click share55%
Open market41%
Avg brand age47 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.2★ — the gap to enter on.

0/100

page quality · 17 products

Sponsored placement65%
New entrants (1y)1· 1 succeeded
Avg rating4.2★
Avg reviews1,447

Top 20w Usb-c電源アダプタ Apple 純正 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¥29K¥58K¥88K¥117K101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

13 flat

Sellers

49

Top-5 brand share

59%

Top 20: 100%

Top-5 click share

55%

Top 20: 100%

Open market

33%

  • エルパ(ELPA)18%
  • Hootek14%
  • エレコム(ELECOM)11%
  • オーム(OHM)9%
  • TESSAN8%
  • MARSNET8%

20w Usb-c電源アダプタ Apple 純正 demand & seasonality

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

Volume19KCVR5.2%Products17Brands13Top 5 Brands59%OOS Rate14.4%Rating4.2★Reviews1,447Avg BSR#50
500300Spike '25Black Friday '25Spike '26Prime Day '26AprMayJunJulAugSepOctNovDecJanFebMarAprMayJunJul

Peak months: Jan, Feb, Mar, Oct, Nov, Dec · busiest ÷ quietest = 3.7×

What reviews say buyers love and hate about 20w Usb-c電源アダプタ Apple 純正

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

What buyers love

88% of reviews
コストパフォーマンス26%

リーズナブル

充電21%

おすすめ充電器

使用の容易さ20%

便利アイテム

総合品質7%

良質なお品物です。

コンパクトさ4%

コンパクトサイズ

What buyers complain about

72% of reviews
充電21%

充電できなくなった

加熱11%

熱くなる

耐久性10%

3ヶ月で壊れました。

総合品質7%

品質管理に疑問

コストパフォーマンス7%

安い

20w Usb-c電源アダプタ Apple 純正 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充電
25%
2サイズ全体
24%
3互換性-全体
10%
4接続性 - 全体
7%
5コネクタ/ポート/プラグ
6%

Common 20w Usb-c電源アダプタ Apple 純正 questions

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

Flapen scores 20w Usb-c電源アダプタ Apple 純正 55/100 on Amazon Japan — Worth a look. The niche generates ¥730K/yr across 17 tracked products. 1 of 1 products launched in the last 360 days are still selling. Search demand moved -11.6% over the last 90 days.
Search demand for 20w Usb-c電源アダプタ Apple 純正 on Amazon Japan peaks in Jan–Feb–Mar–Oct–Nov–Dec, where the busiest month runs 3.7× the quietest.