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sh184552520

Skip it

Pricing outside the sweet spot ($1473.83 avg) — this niche doesn't clear our bar today.

Market size 40Growth 11Conversion 31Competition 12Returns 96Price range 0Avg price 0Brand share 7Review moat 94Quality gap 92

Returns

Incredible0.7%

return rate — above 5% kills the launch gate

Review moat

Great119.33

avg incumbent reviews — the moat a new listing must climb

Quality gap

Great4.0★

avg incumbent rating — lower means beatable quality

Market size

Okay¥206K

¥206K/yr · 6K searches

Conversion

Okay2.4%

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

Competition

Bad86%

top-5 click share — a locked-up shelf

Growth

Bad-27.8%

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

Brand share

Bad97%

top-5 brand share — brand-locked demand

Avg price

Bad¥1473.83

avg listing price — sweet spot $15–$100

Price range

Bad¥576.11–¥4309.72

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

According to Flapen's Amazon Japan niche tracking, sh184552520 is a ¥206K/yr Amazon Japan market (6K searches/yr). The top 5 brands hold 97% of demand. Verdict: Skip it — 37/100.

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

sh184552520 market data

Units sold / yr
500–750
avg 0–100/product
Revenue / yr
¥737K–¥1.1M
units × avg price
Conversion rate
2.4%
Avg BSR
#776
Page quality
0%
Prime
67%
Sponsored
78%
Out of stock
5.0%
Avg brand age
41 months
Avg seller age
222 days

Competition & brand share

The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.

Brands

6 falling

Sellers

12

Top-5 brand share

97%

Top 20: 100%

Top-5 click share

86%

Top 20: 100%

Open market

0%

  • Areotek43%
  • ロワジャパン16%
  • パナソニック(Panasonic)13%
  • YUFEEI13%
  • ノーブランド品12%
  • TLALOC ENERGY3%
  • Open — no brand owns it (0%)

Demand

Weekly Amazon search volume, last 34 weeks — -27.8% search growth over the last 90 days.
175125Spike '26Dec '25Jan '26Feb '26Mar '26Apr '26May '26Jul '26

Top sh184552520 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%¥21K20%¥41K30%¥62K40%¥82K1101001K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

All 9 tracked products in this niche — three views at once, no toggling.

What buyers say about sh184552520

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

What buyers love

コストパフォーマンス24%

“コスパいいです”

使用の容易さ22%

“使用可能”

耐久性12%

“10年使えます”

バッテリーの内蔵11%

“10年使えます”

サイズ全体9%

“サイズは、ピッタリ”

互換性-全体7%

“純正品と遜色ないです。 互換品とは思えないほどクオリティ高く、何ら問題なく使用できました。”

組み立て/インストール4%

“簡単設置できました。”

機能全体2%

“動いてくれました”

広告と実際の製品の違い2%

“購入者の方のレビュー通りで、問題なく使用できました。”

総合品質2%

“純正品と遜色ないです。”

What buyers complain about

耐久性25%

“1年でダメになりました”

バッテリーの内蔵18%

“火災報知器の電池が無くなりピッピッと一定間隔で鳴っていました。”

使用の容易さ7%

“使用不可”

互換性-全体7%

“コネクターが合わなく、古いコネクターを利用して接続し直しました。”

不良材料/部品4%

“不良品”

商品の状態4%

“本体も古いので問題切り出しが難しいと思い。今は取り外して使っていません”

広告と実際の製品の違い4%

“指定した物と違う商品を羅列させるやり方が原因です。”

コネクタ/ポート/プラグ4%

“コネクタの形状が合わないから、こちらがわざわざ返送返品したら、返金が0円”

サイズ全体4%

“数ミリ大きくて入らず”

エシカルトレード/フェアトレード4%

“詐欺かよ”

Top return reasons

サイズ全体38%
互換性-全体27%
コネクタ/ポート/プラグ7%
接続性 - 全体7%
厚み5%
機能全体5%
使用の容易さ2%
広告と実際の製品の違い2%
商品の状態2%
組み立て/インストール2%

Common questions

Is sh184552520 profitable to sell on Amazon Japan?
The niche generates ¥206K/yr across 9 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -27.8%. Flapen's verdict: Skip it (37/100).
How competitive is the sh184552520 niche?
6 brands and 12 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 97% of demand.
What do buyers complain about in sh184552520?
Top complaints mined from reviews: 耐久性, バッテリーの内蔵, 使用の容易さ. The return rate is 0.7%.
What does it cost to enter the sh184552520 niche?
Listings span ¥576.11–¥4309.72; the average listing price is ¥1473.83 (sweet spot $15–$100). The average incumbent carries 119 reviews — the moat a new listing must climb.