---
title: "マグァンプk — ¥9.8M/yr Amazon JP Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/jp/diy/k"
last_updated: "2026-08-08T07:43:56.284Z"
locale: en
meta:
description: "Niche score 48/100 · ¥9.8M/yr market · 149K searches/yr · ¥800.83 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 48/100 · ¥9.8M/yr market · 149K searches/yr · ¥800.83 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "マグァンプk — ¥9.8M/yr Amazon JP Niche (2026) - Flapen"
---
# **マグァンプk**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 100Growth 44Conversion 80Competition 3Returns 99Price range 0Avg price 0Brand share 0Review moat 37Quality gap 58
**Market size**
**Incredible****¥9.8M**
¥9.8M/yr · 149K searches
**Returns**
**Incredible****0.2%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****8.2%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+14.9%**
90-day search growth — must beat 0% to launch
**Review moat**
**Okay****2,786.83**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****97%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Avg price**
**Bad****¥800.83**
avg listing price — sweet spot $15–$100
**Price range**
**Bad****¥431.14–¥1551.48**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Signals**[** High Price**](https://flapen.com/research/niches?market=jp&signal=high_price "Avg price > $50")
According to Flapen's Amazon Japan niche tracking, マグァンプk is a ¥9.8M/yr Amazon Japan market (149K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Apr–May. Verdict: Skip it — 48/100.
Data updated Jul 30, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **マグァンプk market data**
- **Units sold / yr**
- **13K–15K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **¥10.0M–¥12.0M**
- units × avg price
- **Conversion rate**
- **8.2%**
- **Avg BSR**
- **#28**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **33%**
- **Out of stock**
- **5.1%**
- **Avg brand age**
- **65 months**
- **Avg seller age**
- **178 days**
## **Competition & brand share**
The top 5 products capture 97% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**2 **—flat
**Sellers**
**49**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**97%**
Top 20: 100%
**Open market**
**0%**
- ハイポネックスジャパン(HYPONeX JAPAN)96% - ハイポネックス4% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +14.9% search growth over the last 90 days.
5K3KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May · busiest ÷ quietest = 3.4×
[**Open Trend **](https://flapen.com/research/jp/diy/k/trend)
## **Top マグァンプk search terms**
- **マグァンプk**39K/yr+17.2%7.0% conv. - **マグアンプ**15K/yr+21.5%6.1% conv. - **マグアンプk**16K/yr+8.4%4.7% conv. - **マグァンプ**14K/yr+15.7%6.2% conv. - **まぐあんぷk 中粒**12K/yr+2.9%6.5% conv. - **マグァンプk 中粒**12K/yr+17.9%8.7% conv. - **マグアンプk 中粒**8K/yr+2.7%10.8% conv. - **マグァンプk 小粒**7K/yr+30.3%8.8% conv. - **まがんぷk**7K/yr+12.6%5.6% conv. - **マガンプk**4K/yr+13.8%7.6% conv. [**All search terms **](https://flapen.com/research/jp/diy/k/search-terms)
## **Top マグァンプk 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%¥1.5M30%¥2.9M45%¥4.4M60%¥5.9M1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 6 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**ハイポネックス マグァンプK 中粒 1.1kg**ハイポネックスジャパン(HYPONeX JAPAN)**¥954.65**4.4★4,083 rev](https://www.amazon.co.jp/dp/B0BS8TYN2C) [2**ハイポネックス マグァンプK 中粒 200g**ハイポネックスジャパン(HYPONeX JAPAN)**¥431.14**4.4★4,083 rev](https://www.amazon.co.jp/dp/B0BS8B5D2Y) [3**ハイポネックス マグァンプK 小粒 500g**ハイポネックスジャパン(HYPONeX JAPAN)**¥647.93**4.4★4,083 rev](https://www.amazon.co.jp/dp/B0BS8XFSPQ) [4**ハイポネックス マグァンプK 中粒 500g**ハイポネックスジャパン(HYPONeX JAPAN)**¥650.69**4.4★4,083 rev](https://www.amazon.co.jp/dp/B0BS8L5ZDQ) [5**ハイポネックスジャパン(HYPONeX JAPAN) 追肥 緩効性肥料 マグァンプK 小粒 1.1kg 草花・野菜・芝生・観葉植物に**ハイポネックス**¥1551.48**4.5★5 rev](https://www.amazon.co.jp/dp/B0G41JMKWY)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**ハイポネックスジャパン(HYPONeX JAPAN) 追肥 緩効性肥料 マグァンプK 小粒 1.1kg 草花・野菜・芝生・観葉植物に**ハイポネックス**¥1551.48**5 rev6mo ago](https://www.amazon.co.jp/dp/B0G41JMKWY) [**ハイポネックス マグァンプK 中粒 200g**ハイポネックスジャパン(HYPONeX JAPAN)**¥431.14**4,083 rev3y ago](https://www.amazon.co.jp/dp/B0BS8B5D2Y) [**ハイポネックス マグァンプK 小粒 500g**ハイポネックスジャパン(HYPONeX JAPAN)**¥647.93**4,083 rev3y ago](https://www.amazon.co.jp/dp/B0BS8XFSPQ) [**ハイポネックス マグァンプK 中粒 500g**ハイポネックスジャパン(HYPONeX JAPAN)**¥650.69**4,083 rev3y ago](https://www.amazon.co.jp/dp/B0BS8L5ZDQ) [**ハイポネックス マグァンプK 中粒 1.1kg**ハイポネックスジャパン(HYPONeX JAPAN)**¥954.65**4,083 rev3y ago](https://www.amazon.co.jp/dp/B0BS8TYN2C)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**ハイポネックスジャパン(HYPONeX JAPAN) 追肥 緩効性肥料 マグァンプK 小粒 1.1kg 草花・野菜・芝生・観葉植物に**ハイポネックス**¥1551.48**4.5★**▲ 72%**](https://www.amazon.co.jp/dp/B0G41JMKWY) [**ハイポネックス マグァンプK 中粒 1.1kg**ハイポネックスジャパン(HYPONeX JAPAN)**¥954.65**4.4★**— 6%**](https://www.amazon.co.jp/dp/B0BS8TYN2C) [**ハイポネックス マグァンプK 小粒 500g**ハイポネックスジャパン(HYPONeX JAPAN)**¥647.93**4.4★**— 1%**](https://www.amazon.co.jp/dp/B0BS8XFSPQ) [**ハイポネックス マグァンプK 中粒 500g**ハイポネックスジャパン(HYPONeX JAPAN)**¥650.69**4.4★**— 5%**](https://www.amazon.co.jp/dp/B0BS8L5ZDQ) [**ハイポネックス マグァンプK 中粒 200g**ハイポネックスジャパン(HYPONeX JAPAN)**¥431.14**4.4★**— 10%**](https://www.amazon.co.jp/dp/B0BS8B5D2Y)
**~~View all trending →~~**
## **What buyers say about マグァンプk**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**使用の容易さ**46%
*“小粒が手軽で良いので買えて良かったです。”*
**コストパフォーマンス**13%
*“お買い得でした”*
**総合品質**8%
*“良い商品です。”*
**耐久性**8%
*“持続力: 中粒は約1年効くので、植え替え頻度が少ない観葉植物や多肉植物に最適です。”*
**機能全体**3%
*“即効効果ありました。”*
**正しい内容**3%
*“程よい量”*
**広告と実際の製品の違い**3%
*“問題ありません”*
**測定/読み取り精度**3%
*“いつもハッキリと効果が確認できます。”*
**効率**3%
*“土の入れ替えには必ず使用しています。このおかげかどうかわかりませんがよく実ります”*
**清掃の容易さ**2%
*“手入れが楽になる”*
### **What buyers complain about **
**サイズ全体**20%
*“大きくなぁれ。。。”*
**握り心地**20%
*“手袋しないと手が荒れるので注意”*
**匂い**20%
*“確かにニオイはないし”*
**コストパフォーマンス**10%
*“参考価格、高くし過ぎ”*
**硬い感覚**10%
*“難しいね”*
**色**10%
*“花の色の濃さがまばらになりました”*
### **Top return reasons **
**漏れ防止**40%
**耐久性**20%
**サイズ全体**20%
**不良材料/部品**20%
## **Common questions**
- **Is マグァンプk profitable to sell on Amazon Japan?**
- The niche generates ¥9.8M/yr across 6 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +14.9%. Flapen's verdict: Skip it (48/100).
- **How competitive is the マグァンプk niche?**
- 2 brands and 49 sellers compete. The top 5 products take 97% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in マグァンプk?**
- Top complaints mined from reviews: サイズ全体, 握り心地, 匂い. The return rate is 0.2%.
- **When does demand for マグァンプk peak?**
- Demand peaks in Apr–May; the busiest month runs 3.4× the quietest.
- **What does it cost to enter the マグァンプk niche?**
- Listings span ¥431.14–¥1551.48; the average listing price is ¥800.83 (sweet spot $15–$100). The average incumbent carries 2,787 reviews — the moat a new listing must climb.
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