tks05301j
Worth a lookShows a $14.2M/yr market, but a concentrated shelf (top 5 take 100% of clicks) keeps it on the watch list.
Market size
Incredible¥14.2M¥14.2M/yr · 13K searches
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Review moat
Great117.25avg incumbent reviews — the moat a new listing must climb
Quality gap
Great4.0★avg incumbent rating — lower means beatable quality
Conversion
Great8.9%search→purchase rate — share of searches ending in a sale
Growth
Bad-8.1%90-day search growth — must beat 0% to launch
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Avg price
Bad¥12371.77avg listing price — sweet spot $15–$100
Price range
Bad¥10248.13–¥16753.72cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon Japan niche tracking, tks05301j is a ¥14.2M/yr Amazon Japan market (13K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Dec. Verdict: Worth a look — 50/100.
Data updated Jul 30, 2026 · scored weekly · How we score niches
tks05301j market data
- Units sold / yr
- 1K–1K
- avg 100–250/product
- Revenue / yr
- ¥12.4M–¥15.5M
- units × avg price
- Conversion rate
- 8.9%
- Avg BSR
- #175
- Page quality
- 0%
- Prime
- 50%
- Sponsored
- 25%
- Out of stock
- 41.8%
- Avg brand age
- 87 months
- Avg seller age
- 157 days
Competition & brand share
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.Brands
2 falling
Sellers
70
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- TOTO82%
- ノーブランド品18%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -8.1% search growth over the last 90 days.Peak months: Dec · busiest ÷ quietest = 1.8×
Top tks05301j products on Amazon
All 4 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Newest
by launch dateWhat buyers say about tks05301j
What buyers praise and complain about, mined from review topics.What buyers complain about
“5年近く使用後根元から水漏れ。”
“接続時に失くしやすいです。”
“品物+作業代に加えて結構な金額がかかる時があります”
Top return reasons
Common questions
- Is tks05301j profitable to sell on Amazon Japan?
- The niche generates ¥14.2M/yr across 4 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -8.1%. Flapen's verdict: Worth a look (50/100).
- How competitive is the tks05301j niche?
- 2 brands and 70 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in tks05301j?
- Top complaints mined from reviews: 漏れ防止, 接続性 - 全体, コストパフォーマンス. The return rate is 0.4%.
- When does demand for tks05301j peak?
- Demand peaks in Dec; the busiest month runs 1.8× the quietest.
- What does it cost to enter the tks05301j niche?
- Listings span ¥10248.13–¥16753.72; the average listing price is ¥12371.77 (sweet spot $15–$100). The average incumbent carries 117 reviews — the moat a new listing must climb.