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59

ディアナsc

Launch it

A $2.5M/yr market growing +155.1% this quarter with returns at 0.2% — clears our launch bar.

Market size 95Growth 96Conversion 41Competition 12Returns 99Price range 0Avg price 0Brand share 0Review moat 94Quality gap 96

Returns

Incredible0.2%

return rate — above 5% kills the launch gate

Growth

Incredible+155.1%

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

Quality gap

Incredible4.0★

avg incumbent rating — lower means beatable quality

Market size

Incredible¥2.5M

¥2.5M/yr · 7K searches

Review moat

Great117.1

avg incumbent reviews — the moat a new listing must climb

Conversion

Okay3.3%

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

Competition

Bad86%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Avg price

Bad¥10733.85

avg listing price — sweet spot $15–$100

Price range

Bad¥1074.50–¥16730.40

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

According to Flapen's Amazon Japan niche tracking, ディアナsc is a ¥2.5M/yr Amazon Japan market (7K searches/yr). The top 5 brands hold 100% of demand. Verdict: Launch it — 59/100.

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

ディアナsc market data

Units sold / yr
250–500
avg 0–100/product
Revenue / yr
¥2.7M–¥5.4M
units × avg price
Conversion rate
3.3%
Avg BSR
#676
Page quality
0%
Prime
90%
Sponsored
60%
Out of stock
7.7%
Avg brand age
69 months
Avg seller age
204 days

Competition & brand share

The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.

Brands

4 rising

Sellers

14

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

86%

Top 20: 100%

Open market

0%

  • 住友化学園芸58%
  • DIANA(ダイアナ)31%
  • 農業屋6%
  • Sumitomo Chemical India Ltd5%

Demand

Weekly Amazon search volume, last 34 weeks — +155.1% search growth over the last 90 days.
350250Holiday '25Spike '26Dec '25Jan '26Feb '26Mar '26Apr '26May '26Jul '26

Top ディアナsc 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%15%¥372K30%¥745K45%¥1.1M60%¥1.5M1101001K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 10 tracked products in this niche — three views at once, no toggling.

What buyers say about ディアナsc

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

What buyers love

広告と実際の製品の違い17%

“効果を信じて・・ まだ未使用ですが、メーカー説明及びレビューを信じ、そして効果が出るよう願い使用します。”

総合品質17%

“全く問題なし。 安定の品質です”

コストパフォーマンス17%

“コスパ良し”

匂い17%

“ダントツ水溶剤は無臭の粒剤です。”

デザイン全体8%

“デザインも良くスタイル良く見える”

使用の容易さ6%

“取り出す時や希釈する時に水和剤のように飛び散らず扱いやすい”

強さ6%

“効果も強くて希釈倍率が高いのも良い。”

効率6%

“効果も強くて希釈倍率が高いのも良い。”

What buyers complain about

快適さ-全体50%

“長時間は履いていられない”

Top return reasons

機能全体50%
サイズ全体50%

Common questions

Is ディアナsc profitable to sell on Amazon Japan?
The niche generates ¥2.5M/yr across 10 tracked products. 90-day search growth is +155.1%. Flapen's verdict: Launch it (59/100).
How competitive is the ディアナsc niche?
4 brands and 14 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in ディアナsc?
Top complaints mined from reviews: 快適さ-全体. The return rate is 0.2%.
What does it cost to enter the ディアナsc niche?
Listings span ¥1074.50–¥16730.40; the average listing price is ¥10733.85 (sweet spot $15–$100). The average incumbent carries 117 reviews — the moat a new listing must climb.