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rse-1250

Skip it

A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.

Market size 96Growth 14Conversion 17Competition 0Returns 97Price range 0Avg price 0Brand share 0Review moat 67Quality gap 50

Returns

Incredible0.6%

return rate — above 5% kills the launch gate

Market size

Incredible¥3.5M

¥3.5M/yr · 39K searches

Review moat

Good809.4

avg incumbent reviews — the moat a new listing must climb

Quality gap

Good4.5★

avg incumbent rating — lower means beatable quality

Conversion

Bad1.4%

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

Growth

Bad-21.8%

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

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Avg price

Bad¥6712.66

avg listing price — sweet spot $15–$100

Price range

Bad¥2062.06–¥10987.16

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

According to Flapen's Amazon Japan niche tracking, rse-1250 is a ¥3.5M/yr Amazon Japan market (39K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Dec. Verdict: Skip it — 36/100.

Data updated Jul 31, 2026 · scored weekly · How we score niches

rse-1250 market data

Units sold / yr
750–1K
avg 100–250/product
Revenue / yr
¥5.0M–¥6.7M
units × avg price
Conversion rate
1.4%
Avg BSR
#83
Page quality
0%
Prime
60%
Sponsored
80%
Out of stock
18.5%
Avg brand age
53 months
Avg seller age
173 days

Competition & brand share

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

4 rising

Sellers

30

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

0%

  • 京セラ(Kyocera)85%
  • Aenllosi7%
  • ミナトワークス4%
  • LUPPY4%
  • Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -21.8% search growth over the last 90 days.
2K1KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26Prime Day '26SepDecMarJunAugNovMarMay

Peak months: Dec · busiest ÷ quietest = 1.7×

Top rse-1250 search terms

  • rse-125023K/yr
  • rse12506K/yr
  • rse1250 ポリッシャー6K/yr
  • rse 12504K/yr
All search terms

Top rse-1250 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%20%¥708K40%¥1.4M60%¥2.1M80%¥2.8M101001K10K 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 5 tracked products in this niche — three views at once, no toggling.

What buyers say about rse-1250

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

What buyers love

使用の容易さ36%

“ちゃんと使えます”

総合品質8%

“比較的リーズナブルですが、純正と遜色無いです”

コストパフォーマンス8%

“比較的リーズナブルですが、純正と遜色無いです”

耐久性6%

“使う方としては純正同等の性能が期待できるため、耐久性や使い勝手等に信頼感があるのは助かりますね。”

明るさ/輝き/光沢5%

“車がピカピカになりました。”

互換性-全体3%

“幅広い互換性”

サイズ全体3%

“ジャストサイズ”

縫い目/仕上げ/磨き3%

“綺麗に磨けてます”

清掃の容易さ3%

“ついでに回転部に付着した汚れもある程度掃除できます。”

効率3%

“DIYにも最適なので、ヤスリも追加で揃えようと思います。”

What buyers complain about

騒音レベル23%

“ただし、めちゃくちゃうるさい。”

サイズ全体10%

“コードが短い”

総合品質8%

“品質管理に疑問を抱きました。”

ジャミング/詰まり8%

“付属のウレタンバフは目詰まりしやすいのでおまけ程度に考えて使う方が良いと思います。”

耐久性8%

“以外と早く壊れてしまいました”

重い8%

“重さがあるけど”

充電4%

“すぐ充電が切れてしまってたけど電源から取れると楽になるました。”

清掃の容易さ4%

“黒い車って綺麗にするの難しいけど、コレ必須かも。”

接続性 - 全体3%

“コードが短く延長コードを接続して使用するようになるが、接続箇所が意外に邪魔になるところが難点ですが、本体は扱いやすくサイズ的にも良いと思う。”

Top return reasons

耐久性40%
騒音レベル20%
不良材料/部品10%
メンテナンスと修理10%
接着性/粘着性10%
水に強い10%

Common questions

Is rse-1250 profitable to sell on Amazon Japan?
The niche generates ¥3.5M/yr across 5 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -21.8%. Flapen's verdict: Skip it (36/100).
How competitive is the rse-1250 niche?
4 brands and 30 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in rse-1250?
Top complaints mined from reviews: 騒音レベル, サイズ全体, 総合品質. The return rate is 0.6%.
When does demand for rse-1250 peak?
Demand peaks in Dec; the busiest month runs 1.7× the quietest.
What does it cost to enter the rse-1250 niche?
Listings span ¥2062.06–¥10987.16; the average listing price is ¥6712.66 (sweet spot $15–$100). The average incumbent carries 809 reviews — the moat a new listing must climb.