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47

mt casa

Skip it

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

Market size 78Growth 20Conversion 52Competition 41Returns 98Price range 0Avg price 0Brand share 0Review moat 92Quality gap 63

Returns

Incredible0.5%

return rate — above 5% kills the launch gate

Review moat

Great152.11

avg incumbent reviews — the moat a new listing must climb

Market size

Great¥1.0M

¥1.0M/yr · 12K searches

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Conversion

Good4.2%

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

Competition

Okay60%

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

Growth

Bad-10.7%

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

Brand share

Bad100%

top-5 brand share — brand-locked demand

Avg price

Bad¥2078.73

avg listing price — sweet spot $15–$100

Price range

Bad¥495.38–¥5219.39

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

According to Flapen's Amazon Japan niche tracking, mt casa is a ¥1.0M/yr Amazon Japan market (12K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Mar–Oct. Verdict: Skip it — 47/100.

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

mt casa market data

Units sold / yr
500–750
avg 0–100/product
Revenue / yr
¥1.0M–¥1.6M
units × avg price
Conversion rate
4.2%
Avg BSR
#406
Page quality
0%
Prime
100%
Sponsored
22%
Out of stock
0.0%
Avg brand age
40 months
Avg seller age
173 days

Competition & brand share

The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.

Brands

3 falling

Sellers

23

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

60%

Top 20: 100%

Open market

0%

  • カモ井加工紙59%
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  • mt masking tape17%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -10.7% search growth over the last 90 days.
700500Spike '24Spike '25Prime Day '25Spike '26Prime Day '26SepDecMarJunAugNovMarMay

Peak months: Mar, Oct · busiest ÷ quietest = 1.9×

Top mt casa 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%¥102K20%¥204K30%¥306K40%¥407K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

All 18 tracked products in this niche — three views at once, no toggling.

What buyers say about mt casa

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

What buyers love

使用の容易さ24%

“幅32センチは、初心者には 貼りやすいです”

接着性/粘着性20%

“ほとんどは剥がしやすくて貼りやすいですが”

コストパフォーマンス9%

“お値段がそこそこするので星-1。”

清掃の容易さ6%

“きれいに貼れるようになりました。”

広告と実際の製品の違い4%

“画像そのまま”

3%

“色がちょうど良い”

厚み3%

“厚みも白さも100均とはまるで別物です。”

柔らかい感触3%

“ちゃんとマット感があり優秀。”

総合品質3%

“良い商品です”

残留物1%

“1年貼っても、跡残りがなかったのも◎”

What buyers complain about

接着性/粘着性27%

“以前購入していたダイソーの100円マスキングテープでは粘着力が足りず簡単に剥がれてしまいセンサーライトが落ちてしまうのですが、値段が数倍高いこちらの商品を使ったところ全く剥がれません。”

使用の容易さ8%

“曲線は貼るのが難しく、少しシワになる。”

サイズ全体5%

“サイズ違いも欲しいです”

耐久性4%

“貼って剥がせて凄く張りやすいけど何回かやり直した部分は1ヶ月したら剥がれたので”

磁力/吸着力3%

“磁石の付かない場所にこれを貼ってから磁石用補助板を貼り磁石で付けるものを使っています。”

厚み3%

“テープが重なってしまうところは上に貼る壁紙の厚さが薄いとぼこぼこ浮き出てきます。”

小じわ2%

“曲線は貼るのが難しく、少しシワになる。”

柔軟性2%

“曲線は貼るのが難しく、少しシワになる。”

Top return reasons

21%
サイズ全体21%
接着性/粘着性14%
使用の容易さ10%
互換性-全体7%
耐久性3%
総合品質3%
ペイントの品質3%
広告と実際の製品の違い3%
薄い3%

Common questions

Is mt casa profitable to sell on Amazon Japan?
The niche generates ¥1.0M/yr across 18 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is -10.7%. Flapen's verdict: Skip it (47/100).
How competitive is the mt casa niche?
3 brands and 23 sellers compete. The top 5 products take 60% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in mt casa?
Top complaints mined from reviews: 接着性/粘着性, 使用の容易さ, サイズ全体. The return rate is 0.5%.
When does demand for mt casa peak?
Demand peaks in Mar–Oct; the busiest month runs 1.9× the quietest.
What does it cost to enter the mt casa niche?
Listings span ¥495.38–¥5219.39; the average listing price is ¥2078.73 (sweet spot $15–$100). The average incumbent carries 152 reviews — the moat a new listing must climb.