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ykkap カードキー

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Market size 100Growth 17Conversion 71Competition 41Returns 99Price range 0Avg price 0Brand share 0Review moat 95Quality gap 24

Market size

Incredible¥20.0M

¥20.0M/yr · 54K searches

Returns

Incredible0.3%

return rate — above 5% kills the launch gate

Review moat

Incredible92.38

avg incumbent reviews — the moat a new listing must climb

Conversion

Good6.5%

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

Competition

Okay61%

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

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-15.5%

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

Brand share

Bad100%

top-5 brand share — brand-locked demand

Avg price

Bad¥5698.14

avg listing price — sweet spot $15–$100

Price range

Bad¥1670.94–¥20692.96

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

According to Flapen's Amazon Japan niche tracking, ykkap カードキー is a ¥20.0M/yr Amazon Japan market (54K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 48/100.

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

ykkap カードキー market data

Units sold / yr
3K–4K
avg 100–250/product
Revenue / yr
¥17.1M–¥22.8M
units × avg price
Conversion rate
6.5%
Avg BSR
#287
Page quality
0%
Prime
62%
Sponsored
48%
Out of stock
1.3%
Avg brand age
50 months
Avg seller age
179 days

Competition & brand share

The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.

Brands

5 falling

Sellers

10

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

61%

Top 20: 99%

Open market

0%

  • ノーブランド品38%
  • YKKAP37%
  • smasol18%
  • GENERIC6%
  • smart+1%
  • Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -15.5% search growth over the last 90 days.
3K2KSpike '24Holiday '24Spike '25Prime Day '25Spike '26Prime Day '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Top ykkap カードキー search terms

  • ykkap カードキー22K/yr
  • ykkap12K/yr
  • ykkap スマートキー12K/yr
  • ykkap スマートコントロールキー5K/yr
  • ピタットキー ykkap3K/yr
All search terms

Top ykkap カードキー 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%10%¥2.0M20%¥4.0M30%¥6.0M40%¥8.0M1101001K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)4 products missing review or click data not plotted

All 21 tracked products in this niche — three views at once, no toggling.

What buyers say about ykkap カードキー

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

What buyers love

使用の容易さ40%

“便利です”

コストパフォーマンス16%

“価格も手頃で良い”

総合品質13%

“いい商品です”

組み立て/インストール12%

“設定は簡単にできます。”

レザーの品質7%

“高級感がある. 本皮で高級感が有ってとても気に入ってます。”

ロック機構6%

“現在使用の鍵と同一のもの購入”

What buyers complain about

コストパフォーマンス38%

“とにかく価格だけが高すぎます。”

サイズ全体25%

“合うか不安だったけど使えてよかったです”

ロック機構13%

“まず使わない物理鍵は無しで”

Top return reasons

互換性-全体29%
サイズ全体18%
接続性 - 全体12%
不良材料/部品12%
機能全体6%
広告と実際の製品の違い6%
使用の容易さ6%
ロック機構6%
組み立て/インストール6%

Common questions

Is ykkap カードキー profitable to sell on Amazon Japan?
The niche generates ¥20.0M/yr across 21 tracked products. 6 of 7 products launched in the last 360 days are still selling. 90-day search growth is -15.5%. Flapen's verdict: Skip it (48/100).
How competitive is the ykkap カードキー niche?
5 brands and 10 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in ykkap カードキー?
Top complaints mined from reviews: コストパフォーマンス, サイズ全体, ロック機構. The return rate is 0.3%.
When does demand for ykkap カードキー peak?
Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the ykkap カードキー niche?
Listings span ¥1670.94–¥20692.96; the average listing price is ¥5698.14 (sweet spot $15–$100). The average incumbent carries 92 reviews — the moat a new listing must climb.