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57

uping

Worth a look

Shows a $5.4M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 98Growth 13Conversion 17Competition 76Returns 86Price range 0Avg price 0Brand share 49Review moat 87Quality gap 95

Market size

Incredible¥5.4M

¥5.4M/yr · 191K searches

Quality gap

Incredible4.0★

avg incumbent rating — lower means beatable quality

Review moat

Great262.74

avg incumbent reviews — the moat a new listing must climb

Returns

Great1.4%

return rate — above 5% kills the launch gate

Competition

Great39%

top-5 click share — an open shelf

Brand share

Okay76%

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

Conversion

Bad1.3%

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

Growth

Bad-23.5%

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

Avg price

Bad¥2128.81

avg listing price — sweet spot $15–$100

Price range

Bad¥732.55–¥9585.72

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

According to Flapen's Amazon Japan niche tracking, uping is a ¥5.4M/yr Amazon Japan market (191K searches/yr). The top 5 brands hold 76% of demand. Demand peaks in Jan–Oct–Nov–Dec. Verdict: Worth a look — 57/100.

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

uping market data

Units sold / yr
3K–3K
avg 0–100/product
Revenue / yr
¥5.3M–¥6.4M
units × avg price
Conversion rate
1.3%
Avg BSR
#185
Page quality
0%
Prime
98%
Sponsored
74%
Out of stock
1.0%
Avg brand age
31 months
Avg seller age
156 days

Competition & brand share

Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.

Brands

17 falling

Sellers

59

Top-5 brand share

76%

Top 20: 100%

Top-5 click share

39%

Top 20: 75%

Open market

21%

  • 育のさち32%
  • 旭電機化成(Asahi Denki Kasei)19%
  • 台和(Daiwa)15%
  • GAGUIUP5%
  • 石丸合成樹脂(Ishimaru Gosei Jushi)5%
  • Ezprotekt3%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -23.5% search growth over the last 90 days.
10K6KSpike '24Holiday '24Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jan, Oct, Nov, Dec · busiest ÷ quietest = 6.1×

Top uping search terms

  • コタツ 継ぎ脚12K/yr
  • こたつの高さを上げる足19K/yr
  • テーブルの脚を高くする6K/yr
  • 継ぎ脚 高さ調整 脚 継足3K/yr
  • こたつ 継ぎ足し脚19K/yr
  • ベッド 継ぎ足し6K/yr
  • こたつの足を高くする17K/yr
  • ベッド かさ上げ6K/yr
  • ソファ 高さ上げ4K/yr
  • ベッド 足上げ6K/yr
All search terms

Top uping 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%4%¥215K8%¥430K12%¥645K16%¥860K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

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

What buyers say about uping

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

What buyers love

強さ17%

“丈夫. すごく丈夫です。”

サイズ全体13%

“サイズはキツ目が良い”

使用の容易さ11%

“簡単です”

コストパフォーマンス9%

“値段相応”

清掃の容易さ9%

“お掃除ラクラク”

総合品質6%

“良い商品です”

調整可能性/回転機能/リクライニング機能 6%

“高さ調節”

組み立て/インストール5%

“取り付け簡単”

広告と実際の製品の違い4%

“表示通り”

握り心地3%

“滑り止め効果も高い”

What buyers complain about

サイズ全体24%

“サイズが合わなすぎ”

バランス/安定性10%

“安定性が悪くベットがグラつく”

厚み5%

“洗濯機の脚を受けるパットが薄すぎて今はひとつ”

コストパフォーマンス4%

“Amazonでみると半値以下で買えた。”

騒音レベル4%

“冷凍ストッカーは製品自体の振動音が気になりますが、それを抑える効果はなさそうです。”

機能全体4%

“動いてしまう”

握り心地4%

“滑って足が外れモニターやマウス等が落ちた事が2回起こってる。”

材料の品質3%

“樹脂の強度と劣化が不安です。”

総合品質3%

“ブサイクでした”

清掃の容易さ3%

“掃除が苦手な人はすぐに埃が溜まります”

Top return reasons

サイズ全体48%
高さ7%
広告と実際の製品の違い6%
不良材料/部品5%
互換性-全体4%
組み立て/インストール4%
バランス/安定性4%
握り心地3%
メカニズムの問題3%
機能全体2%

Common questions

Is uping profitable to sell on Amazon Japan?
The niche generates ¥5.4M/yr across 42 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -23.5%. Flapen's verdict: Worth a look (57/100).
How competitive is the uping niche?
17 brands and 59 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 76% of demand.
What do buyers complain about in uping?
Top complaints mined from reviews: サイズ全体, バランス/安定性, 厚み. The return rate is 1.4%.
When does demand for uping peak?
Demand peaks in Jan–Oct–Nov–Dec; the busiest month runs 6.1× the quietest.
What does it cost to enter the uping niche?
Listings span ¥732.55–¥9585.72; the average listing price is ¥2128.81 (sweet spot $15–$100). The average incumbent carries 263 reviews — the moat a new listing must climb.