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54

ace hat

Worth a look

Shows a thin review moat (50 avg reviews), but a small market ($45K/yr) keeps it on the watch list.

Market size 11Growth 72Conversion 18Competition 37Returns 58Price range 93Avg price 95Brand share 54Review moat 98Quality gap 89

Review moat

Incredible49.56

avg incumbent reviews — the moat a new listing must climb

Avg price

Incredible$31.95

avg listing price — sweet spot $15–$100

Price range

Great$13.95–$57.63

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

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Growth

Good+54.7%

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

Returns

Good2.7%

return rate — above 5% kills the launch gate

Brand share

Good73%

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

Competition

Okay63%

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

Conversion

Bad1.4%

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

Market size

Bad$45K

$45K/yr · 99K searches

According to Flapen's Amazon United States niche tracking, ace hat is a $45K/yr Amazon United States market (99K searches/yr). The top 5 brands hold 73% of demand. Demand peaks in Oct. Verdict: Worth a look — 54/100.

Data updated Jul 17, 2026 · scored weekly · How we score niches

ace hat market data

Units sold / yr
2K–2K
avg 100–250/product
Revenue / yr
$48K–$64K
units × avg price
Conversion rate
1.4%
Avg BSR
#5,640
Page quality
0%
Prime
72%
Sponsored
50%
Out of stock
16.5%
Avg brand age
49 months
Avg seller age
173 days

Competition & brand share

The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.

Brands

15 rising

Sellers

31

Top-5 brand share

73%

Top 20: 100%

Top-5 click share

63%

Top 20: 100%

Open market

21%

  • GK-O25%
  • Roncome13%
  • GWOKDAN12%
  • Great Eastern Entertainment11%
  • ABYSTYLE11%
  • RIVEMUG6%

Demand & seasonality

Weekly Amazon search volume, last 91 weeks — +54.7% search growth over the last 90 days.
6K4KSpike '24Spike '25Prime Day '25Spike '26NovDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Oct · busiest ÷ quietest = 6.1×

Top ace hat search terms

  • ace hat one piece19K/yr
  • ace cosplay14K/yr
  • ace one piece cosplay18K/yr
  • ace hat13K/yr
  • one piece ace hat11K/yr
  • portgas d ace hat7K/yr
  • ace one piece hat6K/yr
  • ace one piece costume4K/yr
  • ace costume4K/yr
  • ace costume one piece4K/yr
All search terms

Top ace hat 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%$5K20%$9K30%$14K40%$18K1101001K 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 ace hat

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

What buyers love

Size-Overall29%

“near Perfect Fit”

Quality-Overall16%

“Other reviews are right”

Warmth8%

“Good quality and warm”

Comfort-Overall6%

“comfortable”

Breathability5%

“very breathable”

Gifting Purpose5%

“It was a gift”

Material Quality4%

“Perfect size and material”

Portability3%

“Great for travel”

Leather Quality3%

“Beautiful Leather, fine stringed beads, official tag of toei Animation company”

Design-Overall3%

“And constructed very well”

What buyers complain about

Size-Overall65%

“this is kinda tight”

Strap/String Quality4%

“the only thing I can say is a down side is the strap is a bit small”

Leather Quality4%

“Obviously its not real leather”

Comfort-Overall2%

“I just couldn't putting my deformed foot in the place that I needed too comfortably”

Top return reasons

Size-Overall55%
Feet Fit6%
Advertised Vs Actual Product5%
Width5%
Defective Material/Parts5%
Material Quality5%
Shape/Style3%
Quality-Overall3%
Wrinkles3%
Strength2%

Common questions

Is ace hat profitable to sell on Amazon United States?
The niche generates $45K/yr across 18 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is +54.7%. Flapen's verdict: Worth a look (54/100).
How competitive is the ace hat niche?
15 brands and 31 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 73% of demand.
What do buyers complain about in ace hat?
Top complaints mined from reviews: Size-Overall, Strap/String Quality, Leather Quality. The return rate is 2.7%.
When does demand for ace hat peak?
Demand peaks in Oct; the busiest month runs 6.1× the quietest.
What does it cost to enter the ace hat niche?
Listings span $13.95–$57.63; the average listing price is $31.95 (sweet spot $15–$100). The average incumbent carries 50 reviews — the moat a new listing must climb.