kds
Worth a lookShows a thin review moat (18 avg reviews), but pricing outside the sweet spot ($4707.09 avg) keeps it on the watch list.
Review moat
Incredible18.17avg incumbent reviews — the moat a new listing must climb
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Market size
Incredible¥2.0M¥2.0M/yr · 58K searches
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Competition
Good44%top-5 click share — leaders hold, buyers still browse
Growth
Bad-18.4%90-day search growth — must beat 0% to launch
Conversion
Bad0.7%search→purchase rate — share of searches ending in a sale
Brand share
Bad99%top-5 brand share — brand-locked demand
Avg price
Bad¥4707.09avg listing price — sweet spot $15–$100
Price range
Bad¥441.33–¥103533.34cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon Japan niche tracking, kds is a ¥2.0M/yr Amazon Japan market (58K searches/yr). The top 5 brands hold 99% of demand. Demand peaks in Nov. Verdict: Worth a look — 51/100.
Data updated Jul 31, 2026 · scored weekly · How we score niches
kds market data
- Units sold / yr
- 500–750
- avg 0–100/product
- Revenue / yr
- ¥2.4M–¥3.5M
- units × avg price
- Conversion rate
- 0.7%
- Avg BSR
- #329
- Page quality
- 0%
- Prime
- 88%
- Sponsored
- 27%
- Out of stock
- 0.6%
- Avg brand age
- 60 months
- Avg seller age
- 161 days
Competition & brand share
The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.Brands
6 falling
Sellers
79
Top-5 brand share
99%
Top 20: 100%
Top-5 click share
44%
Top 20: 82%
Open market
0%
- KDS84%
- ノーブランド品13%
- トラスコ中山(TRUSCO)2%
- ムラテックケーディーエス(Muratec Kds)1%
- Generic1%
- Pacific Coast Sunglasses1%
Demand & seasonality
Weekly Amazon search volume, last 69 weeks — -18.4% search growth over the last 90 days.Peak months: Nov · busiest ÷ quietest = 2.0×
Top kds search terms
- kds22K/yr
- kds コンベックス18K/yr
- コンベックス kds6K/yr
- kds スケール7K/yr
- ムラテックkds4K/yr
Top kds 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
グランツ25巾5.5m 右基点目盛・厚爪ホルダー付 GZ2555RZ
KDS¥3217.673.8★9 rev
グランツ25巾5.5m 右基点目盛・厚爪 GZ2555R
KDS¥2669.404.7★8 rev
KDS 剛立G25リミテッド 限定カラー 剛立厚イエローテープ JIS1級 強度UP厚爪 スケール コンベックス GTR-G2550LD3 (ローズピンク)
ノーブランド品¥2918.184.6★3 rev
ムラテックケーディーエス(Murateckds) コンベックス GTR-G22550MZ
KDS¥2583.863.7★20 rev
ムラテックKDS ダブルジーV25巾5.5m GGV25-55
KDS¥1449.214.2★57 rev
Newest
by launch dateKDS 剛立G25リミテッド 限定カラー 剛立厚イエローテープ JIS1級 強度UP厚爪 スケール コンベックス GTR-G2550LD3 (ローズピンク)
ノーブランド品¥2918.183 rev
KDS 剛立G25リミテッド 限定カラー 剛立厚イエローテープ JIS1級 強度UP厚爪 スケール コンベックス GTR-G2550LD3 (ライムグリーン)
ノーブランド品¥2865.873 rev
グランツ25巾5.5m 右基点目盛・厚爪ホルダー付 GZ2555RZ
KDS¥3217.679 rev
グランツ25巾5.5m 右基点目盛・厚爪 GZ2555R
KDS¥2669.408 rev
グランツ25巾5.5m 左基点目盛・厚爪ホルター付 GZ2555Z
KDS¥3546.983 rev
Trending
90-day click momentum
What buyers say about kds
What buyers praise and complain about, mined from review topics.What buyers love
“使い勝手が良い。”
“品質がしっかりしている”
“すごくいい. もう少し軽くなれば尚よし”
“コスパいい”
“安心感のKDS”
“テープはムラテックが長持ちする。”
“デザインが素敵な為、機能面で惜しい感じがしました。”
What buyers complain about
“外の現場作業には向かないかも。”
“安いと思う”
“古くなってまた買いました。”
“解除時のレバーがやや動きが重い”
“でもホルダー使いにくい。”
“安い”
“黄色のロックが不便”
Top return reasons
Common questions
- Is kds profitable to sell on Amazon Japan?
- The niche generates ¥2.0M/yr across 41 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -18.4%. Flapen's verdict: Worth a look (51/100).
- How competitive is the kds niche?
- 6 brands and 79 sellers compete. The top 5 products take 44% of clicks and top 5 brands hold 99% of demand.
- What do buyers complain about in kds?
- Top complaints mined from reviews: 屋外での使用に適している, 総合品質, 商品の状態. The return rate is 0.3%.
- When does demand for kds peak?
- Demand peaks in Nov; the busiest month runs 2.0× the quietest.
- What does it cost to enter the kds niche?
- Listings span ¥441.33–¥103533.34; the average listing price is ¥4707.09 (sweet spot $15–$100). The average incumbent carries 18 reviews — the moat a new listing must climb.