---
title: "Cosmo and Wanda Costume — $39K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/cosmo-and-wanda-costume"
last_updated: "2026-08-11T14:35:03.695Z"
locale: en
meta:
description: "Niche score 42/100 · $39K/yr market · 257K searches/yr · $18.33 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · $39K/yr market · 257K searches/yr · $18.33 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Cosmo and Wanda Costume — $39K/yr Amazon US Niche (2026) - Flapen"
---
# **cosmo and wanda costume**
**Skip it**
High returns (10.8%) — this niche doesn't clear our bar today.
Market size 10Growth 26Conversion 10Competition 53Returns 4Price range 65Avg price 83Brand share 65Review moat 97Quality gap 80
**Review moat**
**Incredible****66.64**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$18.33**
avg listing price — sweet spot $15–$100
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Good****66%**
top-5 brand share — brands hold most of the demand
**Price range**
**Good****$4.38–$34.83**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****53%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Okay****+1.1%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$39K**
$39K/yr · 257K searches
**Conversion**
**Bad****0.8%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Bad****10.8%**
return rate — above 5% kills the launch gate
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, cosmo and wanda costume is a $39K/yr Amazon United States market (257K searches/yr). The top 5 brands hold 66% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Skip it — 42/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **cosmo and wanda costume market data**
- **Units sold / yr**
- **6K–8K**
- avg 100–250/product
- **Revenue / yr**
- **$110K–$147K**
- units × avg price
- **Conversion rate**
- **0.8%**
- **Avg BSR**
- **#2,593**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **41%**
- **Out of stock**
- **12.8%**
- **Avg brand age**
- **43 months**
- **Avg seller age**
- **209 days**
## **Competition & brand share**
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**17 **▲rising
**Sellers**
**21**
**Top-5 brand share**
**66%**
Top 20: 100%
**Top-5 click share**
**53%**
Top 20: 98%
**Open market**
**27%**
- Sratte21% - Parma7719% - ICHIHSUE11% - Rubies8% - GANSHAYA7% - EchoElce7%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +1.1% search growth over the last 90 days.
60K40KSpike '24Spike '25Prime Day '25 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct, Nov · busiest ÷ quietest = 73.6×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/cosmo-and-wanda-costume/trend)
## **Top cosmo and wanda costume search terms**
- **cosmo and wanda costume**101K/yr+10.4%2.3% conv. - **fairly odd parents costume**49K/yr+6.0%2.0% conv. - **cosmo costume**10K/yr-4.7%0.7% conv. - **fairy odd parents costume**17K/yr-30.8%3.0% conv. - **fairly odd parents crown**9K/yr-4.7%3.9% conv. - **cosmo and wanda crown**10K/yr+12.1%0.9% conv. - **fairly odd parents wings**5K/yr+21.5%1.9% conv. - **wanda fairly odd parents costume**4K/yr+15.4%1.4% conv. - **cosmo wanda costume**4K/yr+154.6%6.4% conv. - **wanda costume fairly odd parents**6K/yr+9.4%1.4% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/cosmo-and-wanda-costume/search-terms)
## **Top cosmo and wanda costume 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%5%$2K10%$4K15%$6K20%$8K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 22 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Parma77 Couple halloween Costumes for Adults Fairy Star Wands Wing Gold Crown and Tie Angel Princess Fairy Costume for Birthday Party Cosplay Halloween Dress up Accessories**Parma77**$20.75**4.5★48 rev](https://www.amazon.com/dp/B0FJLBGDL1) [2**Sratte 6 Pcs Halloween Girls Fairy Costume Set Fairy Wings Dress Up Wings Star Wand and Gold Crowns Halloween Costume Dress Up Accessories 13 Inches Gold Wand Party Crowns Birthday Decorations**Sratte**$16.10**4.4★230 rev](https://www.amazon.com/dp/B0B68MXHR8) [3**Rubies Fairly OddParents: Costume Kit for Adults Unisex No Size**Rubies**$18.34**4.5★32 rev](https://www.amazon.com/dp/B0CQMZ2N3J) [4**Sratte 6 Pcs Fairy Costumes Fairy Wings Dress Up Wings Butterfly Glitter Star Wand and Gold Crown Headband Set Halloween Costume Dress Up Accessories Birthday Decorations Party Play Accessories**Sratte**$20.89**4.1★22 rev](https://www.amazon.com/dp/B0DYCG5PRT) [5**EchoElce 7 Pcs Halloween Couple Costume Accessories Include Wand Crown Headband Tie Temporary Hair Color Wax Dye for Couple Party Cosplay Dress Up**EchoElce**$16.46**3.7★18 rev](https://www.amazon.com/dp/B0F9YHYLZ4)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**EQVYG 5PCS Fairy Costume Accessories Adult Fairy Wand Crown Yellow Star Wand Headband Black Tie Adult Couple Halloween Party Dress Up**EQVYG**$13.69**4 rev11mo ago](https://www.amazon.com/dp/B0FLYPW63P) [**Parma77 Couple halloween Costumes for Adults Fairy Star Wands Wing Gold Crown and Tie Angel Princess Fairy Costume for Birthday Party Cosplay Halloween Dress up Accessories**Parma77**$20.75**48 rev11mo ago](https://www.amazon.com/dp/B0FJLBGDL1) [**GANSHAYA Halloween Fairy Costume Funny Couple Set Include Fairy Star Wands Baseball Hat Wings Crown Headbands and Tie for Men Women Team Cosplay**GANSHAYA**$24.27**4 rev1y ago](https://www.amazon.com/dp/B0FFGXMQJZ) [**Halloween Fairy Costume Funny Couple Set Include Fairy Star Wands Wings Crown Headbands Tie Pink and Green Temporary Hair Color Wax Dye for Men Women Party Cosplay**GANSHAYA**$27.99**4 rev1y ago](https://www.amazon.com/dp/B0FFGYPJCW) [**EchoElce 7 Pcs Halloween Couple Costume Accessories Include Wand Crown Headband Tie Temporary Hair Color Wax Dye for Couple Party Cosplay Dress Up**EchoElce**$16.46**18 rev1y ago](https://www.amazon.com/dp/B0F9YHYLZ4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Adult Womens Mens Parents Couples Teens Shirt Cosplay Halloween Costume Pink Top and Cap (M)**ICHIHSUE**$27.00**3.6★**▲ 1000%**](https://www.amazon.com/dp/B0D69SBGW4) [**Nawgut Disco Outfit 70s 80s Prom Sparkle Flare Jumpsuit Party Costume Halloween Cosplay For Adult Women-Medium**Nawgut**$32.44**4.4★**▲ 1000%**](https://www.amazon.com/dp/B0D1TMNXC9) [**Adult Womens Mens Parents Couples Teens Shirt Cosplay Halloween Costume Pink Top and Cap (XL)**ICHIHSUE**$27.18**3.6★**▲ 931%**](https://www.amazon.com/dp/B0D69SS1HC) [**JiaDuo Fairy Star Wand and Crown Headband Set Adult Parents Couples Halloween Costume Dress up Accessories Yellow 1 Pack for Cosmo Wanda**JiaDuo**$8.95**4.4★**▲ 192%**](https://www.amazon.com/dp/B0DFL34BKV) [**BIBUTY Light Up Fairy Wings for Girls Butterfly Wings Fairy Wings Costumes with Light Up Star Wand Wings and Gold Crowns Pretend Play Halloween Costume Dress Up Accessories for Adults and Kids**BIBUTY**$15.26**3.7★**▲ 109%**](https://www.amazon.com/dp/B0F4XMX1F7)
**~~View all trending →~~**
## **What buyers say about cosmo and wanda costume**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**27%
*“Good value for price”*
**Size-Overall**20%
*“This fit super cute”*
**Fun/Entertainment Experience**10%
*“Fun Dress up play wear for the little girls in your life”*
**Quality-Overall**9%
*“Parts are good”*
**Ease Of Use**8%
*“Easy Cosplay”*
**Brightness/Shine/Glow**7%
*“glitter”*
**Strength**6%
*“Sturdy”*
**Comfort-Overall**4%
*“True to size and comfortable”*
**Weight Light**2%
*“they are so lightweight”*
### **What buyers complain about **
**Size-Overall**25%
*“the wings are a bit small”*
**Quality-Overall**13%
*“I wouldnt say that they are the best quality”*
**Strength**8%
*“not that sturdy”*
**Thickness**6%
*“the arm elastic could be thicker”*
### **Top return reasons **
**Size-Overall**49%
**Length**6%
**Chest Fit**6%
**Waist Fit**5%
**Defective Material/Parts**4%
**Advertised Vs Actual Product**4%
**Quality-Overall**4%
**Shape/Style**3%
**Brightness/Shine/Glow**2%
**Value For Money**2%
## **Common questions**
- **Is cosmo and wanda costume profitable to sell on Amazon United States?**
- The niche generates $39K/yr across 22 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +1.1%. Flapen's verdict: Skip it (42/100).
- **How competitive is the cosmo and wanda costume niche?**
- 17 brands and 21 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 66% of demand.
- **What do buyers complain about in cosmo and wanda costume?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Strength. The return rate is 10.8% — above our launch gate.
- **When does demand for cosmo and wanda costume peak?**
- Demand peaks in Sep–Oct–Nov; the busiest month runs 73.6× the quietest.
- **What does it cost to enter the cosmo and wanda costume niche?**
- Listings span $4.38–$34.83; the average listing price is $18.33 (sweet spot $15–$100). The average incumbent carries 67 reviews — the moat a new listing must climb.
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