Is kawajun profitable to sell on Amazon Japan?

The niche generates ¥1.9M/yr across 27 tracked products. 90-day search growth is +3.5%. Flapen's verdict: Worth a look (50/100).

How competitive is the kawajun niche?

6 brands and 47 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 98% of demand.

What do buyers complain about in kawajun?

Top complaints mined from reviews: 機能全体, 組み立て/インストール, 耐久性. The return rate is 0.6%.

When does demand for kawajun peak?

Demand is steady year-round — the busiest month runs 1.4× the quietest.

What does it cost to enter the kawajun niche?

Listings span ¥1831.26–¥15414.41; the average listing price is ¥5572.94 (sweet spot $15–$100). The average incumbent carries 33 reviews — the moat a new listing must climb.

kawajun

Worth a look

Shows a thin review moat (33 avg reviews), but pricing outside the sweet spot ($5572.94 avg) keeps it on the watch list.

Review moat

Incredible32.81

avg incumbent reviews — the moat a new listing must climb

Returns

Incredible0.6%

return rate — above 5% kills the launch gate

Market size

Great¥1.9M

¥1.9M/yr · 53K searches

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Competition

Good48%

top-5 click share — leaders hold, buyers still browse

Growth

Okay+3.5%

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

Conversion

Bad0.7%

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

Brand share

Bad98%

top-5 brand share — brand-locked demand

Avg price

Bad¥5572.94

avg listing price — sweet spot $15–$100

Price range

Bad¥1831.26–¥15414.41

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

Signals High Price

According to Flapen's Amazon Japan niche tracking, kawajun is a ¥1.9M/yr Amazon Japan market (53K searches/yr). The top 5 brands hold 98% of demand. Verdict: Worth a look — 50/100.

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

kawajun market data

Units sold / yr: 500–750; avg 0–100/product
Revenue / yr: ¥2.8M–¥4.2M; units × avg price
Conversion rate: 0.7%
Avg BSR: #291
Page quality: 0%
Prime: 70%
Sponsored: 26%
Out of stock: 7.9%
Avg brand age: 43 months
Avg seller age: 173 days

Competition & brand share

The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.

Brands

6 falling

Sellers

Top-5 brand share

98%

Top 20: 100%

Top-5 click share

48%

Top 20: 92%

Open market

KAWAJUN46%
ハイロジック36%
KAWAJUN(カワジュン)9%
Yamazaki(山崎実業)4%
AQBQCQ4%
BAIRNOX2%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +3.5% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top kawajun search terms

カワジュントイレットペーパーホルダー12K/yr +25.4%0.5% conv.
カワジュンペーパーホルダー13K/yr +3.2%0.5% conv.
かわじゅんペーパーホルダー9K/yr +11.9%0.8% conv.
kawajun10K/yr -16.6%0.3% conv.
カワジュン9K/yr -6.3%0.3% conv.

All search terms

Top kawajun 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★)6 products missing review or click data not plotted

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

Top sellers

by 90-day click share

KAWAJUN(カワジュン) 2連ペーパーホルダークローム＋ヘアライン SC-45W-CT 99898

ハイロジック¥7226.804.5★2 rev

KAWAJUN カワジュンペーパーホルダー（紙巻器）ガラス棚付ダブルペーパーホルダー SC-27M-XC

KAWAJUN¥15414.414.6★62 rev

KAWAJUN カワジュンペーパーホルダー（紙巻器）ブラストブラックアルミペーパーホルダー SC-473-XK

KAWAJUN(カワジュン)¥4574.914.0★38 rev

KAWAJUN(カワジュン) 2連ペーパーホルダー SC-45W-XC 99896

ハイロジック¥7165.755.0★3 rev

●[SC-613-CT]カワジュン KAWAJUN ペーパーホルダー

KAWAJUN¥6449.274.6★18 rev

Newest

by launch date

トイレットペーパーホルダーガラス棚付カワジュンペーパーホルダーガラス棚付ダブルペーパー (B シルバー)

BAIRNOX¥5458.462 rev

1y ago

トイレットペーパーホルダーガラス棚付カワジュンペーパーホルダーガラス棚付ダブルペーパー (シルバー B)

AQBQCQ¥6054.310 rev

1y ago

トイレットペーパーホルダーガラス棚付カワジュンペーパーホルダーガラス棚付ダブルペーパー (ブラック B)

AQBQCQ¥6719.690 rev

1y ago

山崎実業(Yamazaki) 【石こうボードピンセット・木ネジ付属】ウォールトイレットペーパーホルダーダブル石こうボード壁対応ブラック W28.5×D12×H8.5cm タワー tower 棚付き 1300

Yamazaki(山崎実業)¥3310.36123 rev

1y ago

KAWAJUN(カワジュン) 棚付ペーパーホルダークローム+ヘアライン SC-457-CT 99897

ハイロジック¥6710.781 rev

1y ago

What buyers say about kawajun

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

What buyers love

強さ20%

“しっかりした商品です”

デザイン全体16%

“高級感が有りトイレのグレードアップ”

総合品質16%

“見た目も使い勝手も大満足”

使用の容易さ11%

“シンプルでお洒落”

形状/スタイル5%

“スタイリッシュでかっこいい”

ロック機構5%

“ふらふらしていたドアがしっかり固定、スーパーマーケットの商品棚や商品カゴなどを扱う会社の商品だからしっかりしてますね”

組み立て/インストール5%

“取り付け簡単”

持ち運びやすさ5%

“折りたたみグッド”

コストパフォーマンス3%

“この価格でお得だと思います”

色3%

“カラー、デザイン、タフさなどとても良いです”

What buyers complain about

機能全体25%

“機能はいまいち。”

組み立て/インストール25%

“取り付けはまあまあ苦労しました。”

耐久性13%

“すぐに外れてしまいました”

使用の容易さ13%

“取り外しが難しいかなと思いましたが、床の方は案外あっさり交換できました。”

重い6%

“かなり重量があるので、取り付けには注意が必要です。”

コストパフォーマンス3%

“価格は少し高めですが、デザイン性と使い勝手の両方を求める方にはおすすめできる商品です。”

Top return reasons

ギフト用15%

色15%

傷に強い11%

機能全体11%

サイズ全体11%

追加アイテム/添付ファイル9%

使用の容易さ4%

騒音レベル4%

接着性/粘着性4%

広告と実際の製品の違い4%

Common questions

Is kawajun profitable to sell on Amazon Japan?: The niche generates ¥1.9M/yr across 27 tracked products. 90-day search growth is +3.5%. Flapen's verdict: Worth a look (50/100).
How competitive is the kawajun niche?: 6 brands and 47 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 98% of demand.
What do buyers complain about in kawajun?: Top complaints mined from reviews: 機能全体, 組み立て/インストール, 耐久性. The return rate is 0.6%.
When does demand for kawajun peak?: Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the kawajun niche?: Listings span ¥1831.26–¥15414.41; the average listing price is ¥5572.94 (sweet spot $15–$100). The average incumbent carries 33 reviews — the moat a new listing must climb.

kawajun

kawajun market data

Competition & brand share

Demand & seasonality

Top kawajun search terms

Top kawajun products on Amazon

Top sellers

Newest

Trending

What buyers say about kawajun

What buyers love

What buyers complain about

Top return reasons

Common questions

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