Is rピン profitable to sell on Amazon Japan?

The niche generates ¥410K/yr across 27 tracked products. 1 of 7 products launched in the last 360 days are still selling. 90-day search growth is +3.9%. Flapen's verdict: Worth a look (57/100).

How competitive is the rピン niche?

19 brands and 53 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 61% of demand.

When does demand for rピン peak?

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

What does it cost to enter the rピン niche?

Listings span ¥246.30–¥1377.17; the average listing price is ¥638.71 (sweet spot $15–$100). The average incumbent carries 40 reviews — the moat a new listing must climb.

rピン

Worth a look

Shows a thin review moat (40 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Review moat

Incredible39.56

avg incumbent reviews — the moat a new listing must climb

Returns

Incredible0.4%

return rate — above 5% kills the launch gate

Quality gap

Incredible3.9★

avg incumbent rating — lower means beatable quality

Brand share

Good61%

top-5 brand share — brands hold most of the demand

Competition

Good50%

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

Market size

Good¥410K

¥410K/yr · 20K searches

Conversion

Okay3.2%

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

Growth

Okay+3.9%

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

Avg price

Bad¥638.71

avg listing price — sweet spot $15–$100

Price range

Bad¥246.30–¥1377.17

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

Signals Low Review Barrier Quality Gap High Price

According to Flapen's Amazon Japan niche tracking, rピン is a ¥410K/yr Amazon Japan market (20K searches/yr). The top 5 brands hold 61% of demand. Verdict: Worth a look — 57/100.

Data updated Jul 31, 2026 · scored weekly · How we score niches

rピン market data

Units sold / yr: 500–750; avg 0–100/product
Revenue / yr: ¥319K–¥479K; units × avg price
Conversion rate: 3.2%
Avg BSR: #164
Page quality: 0%
Prime: 89%
Sponsored: 52%
Out of stock: 1.3%
Avg brand age: 51 months
Avg seller age: 189 days

Competition & brand share

The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.

Brands

19 rising

Sellers

Top-5 brand share

61%

Top 20: 100%

Top-5 click share

50%

Top 20: 90%

Open market

33%

TANGRUl25%
トラスコ中山(TRUSCO)11%
JUTOSU10%
ダイドーハント9%
JOEBO7%
LOYELEY5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +3.9% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top rピン 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★)3 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

TANGRUl Rピン割りピンピンセット 100個入り 6種類サイズ収納ケース付き銀色炭素鋼メッキ製多用途自動車バイク機械修理用ピン詰め合わせキット

TANGRUl¥635.314.2★12 rev

割りピンセット Rピンコッターピンクリップステンレス割りピン品揃えキットセットシルバートーンヘアピンスナップピンヒッチコッターピンステンレス製造亜鉛メッキ鋼自動車機械修理用汎用 R状バネファスナー 250個入り 12種類収納ケース付きバイク整備機械産業

JUTOSU¥967.763.8★210 rev

JOEBO 125個入り Rピン割りピンセット 8種類スナップピンコッターピンクリップピンベータピンボディクリップ

JOEBO¥1186.834.1★9 rev

LOYELEY Rピンスナップピン 100個入りスナップピンコッターピン割りピンクリップピン R状バネベータピンボディクリップベータピン機械自動車電気機器修理用収納ケース付き 6種類サイズ

LOYELEY¥638.154.2★21 rev

ダイドーハント (DAIDOHANT) ステンレス Rピン [ SUS304 ] (呼び径d1)8 x (長さL)27.7 x (太さd)1.6mm (6個) 10184860

ダイドーハント¥468.144.4★28 rev

Newest

by launch date

コックピン Rピン割りピンスナップボタンピンセットステンレス製自動車模型機械用防錆耐久性抜群収納ケース付き 9種類 80個入り

MOXUANLANYUNXD¥1078.460 rev

1mo ago

OTIMORA Rピン割りピン 100個入り 6種類セット炭素鋼亜鉛メッキ収納ケース付防錆抜け止め強力固定自動車バイク整備修理用多用途

OTIMORA¥644.380 rev

2mo ago

100個入り Rクリップアソートセット、自動車整備・動力機器用304ステンレスヘアピンクリップ - 小型エンジン修理用ファスナー

Nikovoke¥781.900 rev

3mo ago

Rピン割りピンセット 100個セット 6種類サイズスナップピンコッターピンクリップピンベータピンボディクリップ自動車/トラック/バイク/機械/電気機器修理用ステンレスコッターピン収納ケース付

TBDBNR¥674.541 rev

8mo ago

SaveSooo rピン 10個セットブラック 1/8 スケールモデル RCカーボディシェルピンスナップピンカートラックバギー用ックシェル交換パーツ

SaveSooo¥456.754 rev

10mo ago

What buyers say about rピン

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

What buyers love

コストパフォーマンス29%

“クリアケースに入っているし、お得感があったので良い買い物でした。”

使用の容易さ21%

“使えるし保管に便利”

総合品質14%

“もう少し量が少なくて安かったらよかったが良い商品”

互換性-全体14%

“クボタ耕運機 TMA025 互換性ありです。”

サイズ全体14%

“色々なサイズがあるのは助かります”

保管容量7%

“使えるし保管に便利”

Top return reasons

サイズ全体63%

材料の品質25%

厚み13%

Common questions

Is rピン profitable to sell on Amazon Japan?: The niche generates ¥410K/yr across 27 tracked products. 1 of 7 products launched in the last 360 days are still selling. 90-day search growth is +3.9%. Flapen's verdict: Worth a look (57/100).
How competitive is the rピン niche?: 19 brands and 53 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 61% of demand.
When does demand for rピン peak?: Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the rピン niche?: Listings span ¥246.30–¥1377.17; the average listing price is ¥638.71 (sweet spot $15–$100). The average incumbent carries 40 reviews — the moat a new listing must climb.

rピン