Is ktc profitable to sell on Amazon Japan?

The niche generates ¥18.9M/yr across 43 tracked products. 8 of 10 products launched in the last 360 days are still selling. 90-day search growth is -9.0%. Flapen's verdict: Worth a look (50/100).

How competitive is the ktc niche?

4 brands and 65 sellers compete. The top 5 products take 34% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in ktc?

Top complaints mined from reviews: 総合品質, 音質, 耐久性. The return rate is 0.9%.

When does demand for ktc peak?

Demand peaks in Oct–Dec; the busiest month runs 2.2× the quietest.

What does it cost to enter the ktc niche?

Listings span ¥434.52–¥88036.92; the average listing price is ¥23444.85 (sweet spot $15–$100). The average incumbent carries 435 reviews — the moat a new listing must climb.

ktc

Worth a look

Shows a $18.9M/yr market, but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.

Market size

Incredible¥18.9M

¥18.9M/yr · 383K searches

Returns

Incredible0.9%

return rate — above 5% kills the launch gate

Competition

Great34%

top-5 click share — an open shelf

Review moat

Great434.93

avg incumbent reviews — the moat a new listing must climb

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Growth

Bad-9.0%

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

Conversion

Bad0.2%

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

Brand share

Bad100%

top-5 brand share — brand-locked demand

Avg price

Bad¥23444.85

avg listing price — sweet spot $15–$100

Price range

Bad¥434.52–¥88036.92

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

Signals High Price

According to Flapen's Amazon Japan niche tracking, ktc is a ¥18.9M/yr Amazon Japan market (383K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Oct–Dec. Verdict: Worth a look — 50/100.

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

ktc market data

Units sold / yr: 1K–1K; avg 0–100/product
Revenue / yr: ¥23.4M–¥29.3M; units × avg price
Conversion rate: 0.2%
Avg BSR: #147
Page quality: 0%
Prime: 81%
Sponsored: 35%
Out of stock: 2.1%
Avg brand age: 51 months
Avg seller age: 162 days

Competition & brand share

Clicks spread well past the top 5 (34% combined) — an open shelf where new products get seen.

Brands

4 flat

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

34%

Top 20: 75%

Open market

京都機械工具(KTC)77%
KTC20%
ノーブランド品1%
Amazonベーシック(Amazon Basics)1%
Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -9.0% search growth over the last 90 days.

Peak months: Oct, Dec · busiest ÷ quietest = 2.2×

Open Trend

Top ktc search terms

ktc255K/yr -3.0%0.1% conv.
ktc 工具102K/yr -24.1%0.1% conv.
ktc tools9K/yr -15.1%0.0% conv.
京都機械工具10K/yr -23.8%0.1% conv.
ktc工具4K/yr +27.4%0.2% conv.
ｋｔｃ2K/yr -15.6%0.2% conv.

All search terms

Top ktc 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

京都機械工具(KTC)/9.5sq.コードレスラチェットレンチセット品番:JTRE330

京都機械工具(KTC)¥13349.504.3★75 rev

KTC 27インチゲーミングモニター WQHD (2560x1440) Fast IPS 200Hz (210OC可能）1ms(MPRT) 131%sRGB HDR400 低ブルーライトフリッカーフリー FreeSync & G-Sync対応 PS5対応 HDMI2.0×2 DP1.4×2 VESA 100*100 H27T22C-3

KTC¥22477.814.2★1,454 rev

KTC 9.5sq. 92点工具セットオフホワイト EMオリジナルツールセット SKX0213シリーズ採用 SK39224XFWEM 京都機械工具

京都機械工具(KTC)¥84560.324.6★3 rev

KTC MEGAPAD 27インチ FHD 移動式スマートモニター Android 14 A27Q7

KTC¥59540.123.9★1,161 rev

京都機械工具(KTC) タイヤストーンリムーバー AH3

京都機械工具(KTC)¥940.144.2★367 rev

Newest

by launch date

KTC（京都機械工具）/9.5sq.コードレスロングラチェットレンチセット品番：JTRE330L

京都機械工具(KTC)¥17994.377 rev

4mo ago

京都機械工具(KTC)プラハードケースブラック EKP-5BK

京都機械工具(KTC)¥2959.008 rev

7mo ago

KTC 9.5sq. 92点工具セットオフホワイト EMオリジナルツールセット SKX0213シリーズ採用 SK39224XFWEM 京都機械工具

京都機械工具(KTC)¥84560.323 rev

8mo ago

KTC 9.5sq. 92点工具セットシラーズレッド EMオリジナルツールセット SKX0213シリーズ採用 SK39224XSYREM 京都機械工具

京都機械工具(KTC)¥84531.213 rev

8mo ago

KTC 9.5sq. 92点工具セットマラカイトグリーン EMオリジナルツールセット SKX0213シリーズ採用 SK39224XMLGREM 京都機械工具

京都機械工具(KTC)¥85394.323 rev

8mo ago

What buyers say about ktc

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

What buyers love

使用の容易さ18%

“楽です”

コストパフォーマンス17%

“お手頃価格”

総合品質9%

“ガチでゲームをしなければとても良い製品だと思います。”

ディスプレイ解像度6%

“HDR1400は流石に素晴らしく明るい箇所は眩しく、暗い箇所は暗い。”

サイズ全体4%

“大きさもちょうどよくて、気に入っています。”

色3%

“いろきれい”

握り心地3%

“グリップは大事”

強さ3%

“頑丈でおしゃれ”

耐久性3%

“耐久性”

明るさ/輝き/光沢2%

“明るさ、使い勝手はバツグン。”

What buyers complain about

総合品質10%

“同機能を持つ機種の中で安いのにはそれなりの理由があるわけだ”

音質7%

“すごい音がぶちぶち途切れる”

耐久性7%

“すぐに壊れました。”

使用の容易さ5%

“写真編集にはちょっと難があるかも知れません”

スピーカー5%

“スピーカーがついていなかった”

サイズ全体3%

“小さかったパソコンのモニター用に購入”

機能全体3%

“画面を見てみるとなんと他社ではあり得ないフィルムを使用する事で画面を出力すると言うあり得ない粗悪な作りだと言うことに気づきます。”

重い3%

“少し重い”

色3%

“画面が少し白みがある”

強さ3%

“トルクは決して強くはありません”

Top return reasons

機能全体14%

サイズ全体10%

不良材料/部品10%

充電7%

接続性 - 全体7%

ディスプレイの明るさ5%

音質5%

色4%

広告と実際の製品の違い3%

タッチスクリーン3%

Common questions

Is ktc profitable to sell on Amazon Japan?: The niche generates ¥18.9M/yr across 43 tracked products. 8 of 10 products launched in the last 360 days are still selling. 90-day search growth is -9.0%. Flapen's verdict: Worth a look (50/100).
How competitive is the ktc niche?: 4 brands and 65 sellers compete. The top 5 products take 34% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in ktc?: Top complaints mined from reviews: 総合品質, 音質, 耐久性. The return rate is 0.9%.
When does demand for ktc peak?: Demand peaks in Oct–Dec; the busiest month runs 2.2× the quietest.
What does it cost to enter the ktc niche?: Listings span ¥434.52–¥88036.92; the average listing price is ¥23444.85 (sweet spot $15–$100). The average incumbent carries 435 reviews — the moat a new listing must climb.

ktc

ktc market data

Competition & brand share

Demand & seasonality

Top ktc search terms

Top ktc products on Amazon

Top sellers

Newest

Trending

What buyers say about ktc

What buyers love

What buyers complain about

Top return reasons

Common questions

Related niches in DIY・工具・ガーデン