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66

Mermaid Costume for Women

Worth a look

Shows no brand lock-in (top 5 brands take 24% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 56Growth 68Conversion 9Competition 96Returns 23Price range 84Avg price 95Brand share 97Review moat 75Quality gap 73

Brand share

Incredible24%

top-5 brand share — no brand owns this niche

Competition

Incredible18%

top-5 click share — an open shelf

Avg price

Incredible$22.82

avg listing price — sweet spot $15–$100

Price range

Great$5.54–$77.53

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

Review moat

Great493.97

avg incumbent reviews — the moat a new listing must climb

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Growth

Good+49.4%

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

Market size

Good$424K

$424K/yr · 2.6M searches

Returns

Bad5.7%

return rate — above 5% kills the launch gate

Conversion

Bad0.7%

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

Is mermaid costume for women profitable on Amazon?

According to Flapen's Amazon United States niche tracking, mermaid costume for women is a $424K/yr Amazon United States market (2.6M searches/yr). The top 5 brands hold 24% of demand. Demand peaks in Sep–Oct. Verdict: Worth a look — 66/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

mermaid costume for women market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.
Units sold / yr
30K–40K
avg 100–250/product
Revenue / yr
$685K–$913K
units × avg price
Conversion rate
0.7%
Avg BSR
#15,833
Page quality
0%
Prime
99%
Sponsored
80%
Out of stock
7.3%
Avg brand age
33 months
Avg seller age
166 days

Competition: brands, sellers & click share

Clicks spread well past the top 5 (18% combined) — an open shelf where new products get seen.

Brands

90 rising

Sellers

108

Top-5 brand share

24%

Top 20: 51%

Top-5 click share

18%

Top 20: 41%

Open market

74%

  • Rannyfol7%
  • AOBUTE7%
  • color cosplayer5%
  • Nicute3%
  • BTFBM3%
  • VOTUGUBY2%

mermaid costume for women demand & seasonality

Weekly Amazon search volume, last 104 weeks — +49.4% search growth over the last 90 days.
200K150KSpike '24Spike '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Sep, Oct · busiest ÷ quietest = 27.7×

Top mermaid costume for women search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.
  • mermaid accessories385K/yr
  • mermaid skirt333K/yr
  • mermaid costume265K/yr
  • mermaid costume women787K/yr
  • mermaid outfit women94K/yr
  • mermaid accessories women149K/yr
  • mermaid outfit60K/yr
  • mermaid skirt women93K/yr
  • adult mermaid costume55K/yr
  • mermaid costume adult49K/yr
All search terms

Top mermaid costume for women products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%2%$8K4%$17K6%$25K8%$34K1101001K10K 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 reviews say buyers love and hate about mermaid costume for women

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

What buyers love

Quality-Overall13%

“The little barrettes are actually decent quality”

Size-Overall10%

“This is perfect length my daughter absolutely loves it”

Brightness/Shine/Glow9%

“Perfect sparkle”

Color8%

“Colors are accurate”

Value For Money6%

“Great Value For The Money”

Ease Of Use4%

“Easy to use”

Shape/Style4%

“Very stylish”

Comfort-Overall4%

“Super comfortable”

Advertised Vs Actual Product4%

“As described”

Design-Overall3%

“Its an elegant piece that feels thoughtfully made”

What buyers complain about

Size-Overall26%

“Too big”

Color10%

“Color looked different”

Advertised Vs Actual Product7%

“Not as described”

Quality-Overall5%

“Poor quality control”

Durability4%

“Broke after a few uses”

Thickness3%

“also very chunky”

Material Quality2%

“Cheap material”

Allergies2%

“very itchy”

Brightness/Shine/Glow1%

“I will say that the white/metalic-ness of this is not as shiny as depicted on the picture so I am a little disappointed”

Strength1%

“though the material is delicate and can snag if handled roughly”

Top return reasons

Size-Overall31%
Waist Fit11%
Length7%
Color6%
Material Quality6%
Advertised Vs Actual Product5%
Quality-Overall3%
Hip Fit3%
Transparency3%
Chest Fit2%

Common mermaid costume for women questions

Is mermaid costume for women profitable to sell on Amazon United States?
The niche generates $424K/yr across 122 tracked products. 5 of 31 products launched in the last 360 days are still selling. 90-day search growth is +49.4%. Flapen's verdict: Worth a look (66/100).
How competitive is the mermaid costume for women niche?
90 brands and 108 sellers compete. The top 5 products take 18% of clicks and top 5 brands hold 24% of demand.
What do buyers complain about in mermaid costume for women?
Top complaints mined from reviews: Size-Overall, Color, Advertised Vs Actual Product. The return rate is 5.7% — above our launch gate.
When does demand for mermaid costume for women peak?
Demand peaks in Sep–Oct; the busiest month runs 27.7× the quietest.
What does it cost to enter the mermaid costume for women niche?
Listings span $5.54–$77.53; the average listing price is $22.82 (sweet spot $15–$100). The average incumbent carries 494 reviews — the moat a new listing must climb.