ダイオ(dio)
Skip itA small market ($0/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Growth
Great+92.8%90-day search growth — must beat 0% to launch
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Review moat
Okay1,510.25avg incumbent reviews — the moat a new listing must climb
Market size
Bad¥0¥0/yr · 2K searches
Conversion
Bad0.0%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¥1029.98avg listing price — sweet spot $15–$100
Price range
Bad¥642.43–¥1298.60cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon Japan niche tracking, ダイオ(dio) is a ¥0/yr Amazon Japan market (2K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Aug–Sep–Oct–Nov–Dec. Verdict: Skip it — 33/100.
Data updated Jul 31, 2026 · scored weekly · How we score niches
ダイオ(dio) market data
- Units sold / yr
- 0–100
- avg 0–100/product
- Revenue / yr
- ¥0–¥103K
- units × avg price
- Conversion rate
- 0.0%
- Avg BSR
- #63
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 0%
- Out of stock
- 0.0%
- Avg brand age
- 75 months
- Avg seller age
- 188 days
Competition & brand share
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.Brands
1
Sellers
27
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- Dio100%
Demand & seasonality
Weekly Amazon search volume, last 63 weeks — +92.8% search growth over the last 90 days.Peak months: Aug, Sep, Oct, Nov, Dec · busiest ÷ quietest = 12.8×
Top ダイオ(dio) 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 4 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Newest
by launch dateWhat buyers say about ダイオ(dio)
What buyers praise and complain about, mined from review topics.What buyers love
“慣れると簡単です。”
“黒色が良い”
“必ず必要です、張り替え方のDVDも付いていて分かりやすく丁寧に説明してくれます”
“商品自体は問題ないし”
“必要なものがセットになっていて良かったです。”
“ホームセンターより安く購入出来て良かったです。”
“思っていた以上の使い勝手”
“また、梱包につても製品の保護をよく配慮されいました。”
“外から見るとかっこいい”
What buyers complain about
“厚みがあるため、交換作業が大変。”
“簡単にできた試しがない。”
“外から見ると、黒く見えます。”
Top return reasons
Common questions
- Is ダイオ(dio) profitable to sell on Amazon Japan?
- The niche generates ¥0/yr across 4 tracked products. 90-day search growth is +92.8%. Flapen's verdict: Skip it (33/100).
- How competitive is the ダイオ(dio) niche?
- 1 brands and 27 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in ダイオ(dio)?
- Top complaints mined from reviews: 厚み, 使用の容易さ, 色. The return rate is 0.4%.
- When does demand for ダイオ(dio) peak?
- Demand peaks in Aug–Sep–Oct–Nov–Dec; the busiest month runs 12.8× the quietest.
- What does it cost to enter the ダイオ(dio) niche?
- Listings span ¥642.43–¥1298.60; the average listing price is ¥1029.98 (sweet spot $15–$100). The average incumbent carries 1,510 reviews — the moat a new listing must climb.