Is プラダン 1800x900 profitable to sell on Amazon Japan?

The niche generates ¥779K/yr across 19 tracked products. 90-day search growth is -22.3%. Flapen's verdict: Skip it (49/100).

How competitive is the プラダン 1800x900 niche?

11 brands and 41 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 73% of demand.

What do buyers complain about in プラダン 1800x900?

Top complaints mined from reviews: 色, エシカルトレード/フェアトレード. The return rate is 0.4%.

When does demand for プラダン 1800x900 peak?

Demand peaks in Jan–Nov–Dec; the busiest month runs 3.2× the quietest.

What does it cost to enter the プラダン 1800x900 niche?

Listings span ¥871.95–¥16324.34; the average listing price is ¥5088.40 (sweet spot $15–$100). The average incumbent carries 36 reviews — the moat a new listing must climb.

プラダン 1800x900

Skip it

Pricing outside the sweet spot ($5088.40 avg) — this niche doesn't clear our bar today.

Review moat

Incredible35.79

avg incumbent reviews — the moat a new listing must climb

Returns

Incredible0.4%

return rate — above 5% kills the launch gate

Quality gap

Incredible4.0★

avg incumbent rating — lower means beatable quality

Market size

Good¥779K

¥779K/yr · 64K searches

Brand share

Good73%

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

Competition

Okay59%

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

Growth

Bad-22.3%

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

Conversion

Bad0.2%

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

Avg price

Bad¥5088.40

avg listing price — sweet spot $15–$100

Price range

Bad¥871.95–¥16324.34

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

Signals Low Review Barrier High Price

According to Flapen's Amazon Japan niche tracking, プラダン 1800x900 is a ¥779K/yr Amazon Japan market (64K searches/yr). The top 5 brands hold 73% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Skip it — 49/100.

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

プラダン 1800x900 market data

Units sold / yr: 750–1K; avg 0–100/product
Revenue / yr: ¥3.8M–¥5.1M; units × avg price
Conversion rate: 0.2%
Avg BSR: #418
Page quality: 0%
Prime: 37%
Sponsored: 63%
Out of stock: 21.9%
Avg brand age: 71 months
Avg seller age: 176 days

Competition & brand share

The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 falling

Sellers

Top-5 brand share

73%

Top 20: 88%

Top-5 click share

59%

Top 20: 100%

Open market

16%

トラスコ中山(TRUSCO)28%
アイリスオーヤマ(IRIS OHYAMA)20%
--12%
プラダンのヤマコー11%
Mon amulette7%
資材屋本舗6%
Open — no brand owns it (5 brands, 16%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -22.3% search growth over the last 90 days.

Peak months: Jan, Nov, Dec · busiest ÷ quietest = 3.2×

Open Trend

Top プラダン 1800x900 search terms

プラダン 1800x90047K/yr -28.7%0.3% conv.
プラベニヤ10K/yr -1.7%0.2% conv.
プラベニ6K/yr -11.3%0.5% conv.

All search terms

Top プラダン 1800x900 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★)

All 19 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

トラスコ中山(TRUSCO) 遮光・遮熱メッシュシート白 900×1800mm TLHM-9018-W

トラスコ中山(TRUSCO)¥2092.623.6★105 rev

プラベニ（R） 2.5mm厚ナチュラル 910mm×1820mm(20枚)

--¥7372.853.9★35 rev

IRIS(アイリスオーヤマ) プラダン 1820X910X4 ブラック PD1894BK 【5枚入り】

アイリスオーヤマ(IRIS OHYAMA)¥6383.994.0★26 rev

プラダンシート幅910mm×長1820mm×厚4.0mm （10枚入り）

資材屋本舗¥9216.803.9★18 rev

アイリスオーヤマ(IRIS OHYAMA) 養生シート“プラダン PD964BK 5入

アイリスオーヤマ(IRIS OHYAMA)¥2231.794.5★19 rev

Newest

by launch date

【切る手間ゼロ1mm単位でサイズ指定】オーダーカットプラダンシート厚み4ｍｍヨコ880mmまでタテ580ｍｍまで個人様でも配送可能プラスチックダンボール DIY 養生断熱工作 (ホワイト 3枚セット)

ノーブランド品¥2400.461 rev

1y ago

[法人様限定] アイリスオーヤマプラダン 1820×910 mm 白 5枚 PD-1894

アイリスオーヤマ(IRIS OHYAMA)¥4870.704 rev

1y ago

プラダン 3mm厚【10枚セット】プラスチックダンボール段ボールプラダンシート (A4黒色【10枚】)

Mon amulette¥1812.3264 rev

2y ago

プラダン 3mm厚【10枚セット】プラスチックダンボール段ボールプラダンシート (A4白色【10枚】)

Mon amulette¥1766.7664 rev

2y ago

プラダンのヤマコープラダンシート 600ｘ900 厚5mm 10枚入 (黒)

プラダンのヤマコー¥6697.6924 rev

5y ago

What buyers say about プラダン 1800x900

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

What buyers love

加熱50%

“省エネが簡単に実現”

サイズ全体50%

“高さは足りずなので、サイズが豊富だと嬉しいです。”

What buyers complain about

色50%

“白色で頼み、現物のラベルも白になっていましたが届いたのは黒色でした。”

エシカルトレード/フェアトレード50%

“詐欺まがい”

Top return reasons

色71%

サイズ全体14%

広告と実際の製品の違い14%

Common questions

Is プラダン 1800x900 profitable to sell on Amazon Japan?: The niche generates ¥779K/yr across 19 tracked products. 90-day search growth is -22.3%. Flapen's verdict: Skip it (49/100).
How competitive is the プラダン 1800x900 niche?: 11 brands and 41 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 73% of demand.
What do buyers complain about in プラダン 1800x900?: Top complaints mined from reviews: 色, エシカルトレード/フェアトレード. The return rate is 0.4%.
When does demand for プラダン 1800x900 peak?: Demand peaks in Jan–Nov–Dec; the busiest month runs 3.2× the quietest.
What does it cost to enter the プラダン 1800x900 niche?: Listings span ¥871.95–¥16324.34; the average listing price is ¥5088.40 (sweet spot $15–$100). The average incumbent carries 36 reviews — the moat a new listing must climb.