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ケルヒャー k2

Skip it

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

Market size 100Growth 52Conversion 17Competition 0Returns 98Price range 0Avg price 0Brand share 0Review moat 64Quality gap 76

Market size

Incredible¥72.4M

¥72.4M/yr · 305K searches

Returns

Incredible0.4%

return rate — above 5% kills the launch gate

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Review moat

Good946.25

avg incumbent reviews — the moat a new listing must climb

Growth

Good+22.8%

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

Conversion

Bad1.4%

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

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Avg price

Bad¥17564.53

avg listing price — sweet spot $15–$100

Price range

Bad¥14797.34–¥21112.91

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

According to Flapen's Amazon Japan niche tracking, ケルヒャー k2 is a ¥72.4M/yr Amazon Japan market (305K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 45/100.

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

ケルヒャー k2 market data

Units sold / yr
3K–4K
avg 750–1,000/product
Revenue / yr
¥52.7M–¥70.3M
units × avg price
Conversion rate
1.4%
Avg BSR
#35
Page quality
0%
Prime
50%
Sponsored
100%
Out of stock
0.0%
Avg brand age
27 months
Avg seller age
143 days

Competition & brand share

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

Brands

2 flat

Sellers

114

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

0%

  • KÄRCHER96%
  • ケルヒャー(Karcher)4%

Demand

Weekly Amazon search volume, last 23 weeks — +22.8% search growth over the last 90 days.
13K8KSpike '26Prime Day '26Feb '26Mar '26Apr '26Apr '26May '26Jun '26Jun '26Jul '26

Top ケルヒャー k2 search terms

  • けるひやー 高圧洗浄機 k2サイレント80K/yr
  • ケルヒャー k272K/yr
  • k2サイレント43K/yr
  • ケルヒャー k2 サイレント26K/yr
  • ケルヒャーk2サイレント26K/yr
  • ケルヒャー サイレント10K/yr
  • ケルヒャー高圧洗浄機 k28K/yr
  • ケルヒャーk2 サイレント6K/yr
  • けるひやー 高圧洗浄機 k25K/yr
  • ケルヒャーk26K/yr
All search terms

Top ケルヒャー k2 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%¥14.5M40%¥29.0M60%¥43.4M80%¥57.9M101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 4 tracked products in this niche — three views at once, no toggling.

What buyers say about ケルヒャー k2

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

What buyers love

騒音レベル26%

“静かでびっくりしました。”

使用の容易さ11%

“問題なく使えます。”

清掃の容易さ8%

“下水管洗浄にも”

軽い8%

“本体も軽量で扱いやすく”

圧力7%

“水圧最高です。”

スプレー/フロー3%

“勢い良い水流です。”

コストパフォーマンス3%

“コスパ最高”

コンパクトさ3%

“本体はコンパクトで軽量なので、収納場所に困らず、使いたい時にサッと持ち出せます。”

効率2%

“これはよく働きそう”

持ち運びやすさ2%

“小型で持ち運びも便利そうなので重宝です。”

What buyers complain about

耐久性12%

“給水ホースが半年の使用で破れました。”

漏れ防止11%

“水漏れあり”

使用の容易さ10%

“コードが硬いのでちょっと使いづらさはありますが、キレイになります。”

騒音レベル10%

“音がうるさい”

硬い感覚8%

“ホースが硬い”

総合品質5%

“安い”

不良材料/部品4%

“部品がひとつ入ってません”

サイズ全体3%

“とても大きくなっていたので、収納の場所の確保が必要になりました。”

強さ2%

“スイッチ類が作りが弱く、丁寧に使わないと破損しそう”

コストパフォーマンス2%

“これならプラス5千円出して、ホムセンでアタッチがプラス2つ付いたセットを買った方がマシだったかなぁと後悔。”

Top return reasons

漏れ防止17%
不良材料/部品15%
サイズ全体12%
機能全体9%
耐久性6%
水に強い6%
互換性-全体6%
総合品質5%
騒音レベル5%
重い4%

Common questions

Is ケルヒャー k2 profitable to sell on Amazon Japan?
The niche generates ¥72.4M/yr across 4 tracked products. 90-day search growth is +22.8%. Flapen's verdict: Skip it (45/100).
How competitive is the ケルヒャー k2 niche?
2 brands and 114 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in ケルヒャー k2?
Top complaints mined from reviews: 耐久性, 漏れ防止, 使用の容易さ. The return rate is 0.4%.
What does it cost to enter the ケルヒャー k2 niche?
Listings span ¥14797.34–¥21112.91; the average listing price is ¥17564.53 (sweet spot $15–$100). The average incumbent carries 946 reviews — the moat a new listing must climb.