---
title: "Onceler Costume — $180K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/onceler-costume"
last_updated: "2026-08-11T21:33:42.756Z"
locale: en
meta:
description: "Niche score 44/100 · $180K/yr market · 369K searches/yr · $24.53 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · $180K/yr market · 369K searches/yr · $24.53 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Onceler Costume — $180K/yr Amazon US Niche (2026) - Flapen"
---
# **onceler costume**
**Skip it**
Soft demand (-31.5% this quarter) — this niche doesn't clear our bar today.
Market size 36Growth 9Conversion 25Competition 46Returns 18Price range 85Avg price 95Brand share 68Review moat 82Quality gap 58
**Avg price**
**Incredible****$24.53**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$7.52–$64.57**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****354.76**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Good****64%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****58%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****$180K**
$180K/yr · 369K searches
**Conversion**
**Bad****2.0%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Bad****6.9%**
return rate — above 5% kills the launch gate
**Growth**
**Bad****-31.5%**
90-day search growth — must beat 0% to launch
**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, onceler costume is a $180K/yr Amazon United States market (369K searches/yr). The top 5 brands hold 64% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 44/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **onceler costume market data**
- **Units sold / yr**
- **6K–8K**
- avg 100–250/product
- **Revenue / yr**
- **$147K–$196K**
- units × avg price
- **Conversion rate**
- **2.0%**
- **Avg BSR**
- **#2,218**
- **Page quality**
- **0%**
- **Prime**
- **95%**
- **Sponsored**
- **76%**
- **Out of stock**
- **16.9%**
- **Avg brand age**
- **39 months**
- **Avg seller age**
- **203 days**
## **Competition & brand share**
The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**20 **▲rising
**Sellers**
**39**
**Top-5 brand share**
**64%**
Top 20: 100%
**Top-5 click share**
**58%**
Top 20: 99%
**Open market**
**32%**
- Aniler23% - MOFOVELY17% - Hikkcos9% - Howriis8% - Eybila6% - HFYZZ4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -31.5% search growth over the last 90 days.
60K40KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct · busiest ÷ quietest = 101.2×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/onceler-costume/trend)
## **Top onceler costume search terms**
- **onceler costume**180K/yr-26.6%2.5% conv. - **onceler costume lorax**5K/yr+79.5%1.4% conv. - **the onceler costume**39K/yr-32.0%2.6% conv. - **lorax characters costume**7K/yr-31.1%0.4% conv. - **onceler costume kids**10K/yr-80.6%2.1% conv. - **once ler costume**6K/yr-40.5%2.4% conv. - **onceler cosplay**31K/yr-46.4%0.5% conv. - **once-ler costume**7K/yr-37.8%1.1% conv. - **oncelor costume**4K/yr-14.6%2.1% conv. - **onceler costume women**24K/yr-76.0%3.9% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/onceler-costume/search-terms)
## **Top onceler 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%10%$18K20%$36K30%$54K40%$72K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 21 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Aniler Unisex Costume 15 Halloween Elbow Length 20s Stretchy Cosplay Solid Color Gloves (One Size Green)**Aniler**$8.44**4.4★206 rev](https://www.amazon.com/dp/B09Y8GLDQB) [2**MOFOVELY Mens Pirate Coat Steampunk Jacket Tailcoat Renaissance Jacket Halloween Hatter Costume (M Green)**MOFOVELY**$23.26**4.3★732 rev](https://www.amazon.com/dp/B0CYL2X1TH) [3**Green Costume Accessories Top Hat Book Character Costume Accessory Set for Women Adult Cosplay Halloween Party**Hikkcos**$19.68**4.2★8 rev](https://www.amazon.com/dp/B0G42F9JMV) [4**Howriis Mens and Womens Spandex Gloves Costume Halloween Cosplay Stretchy Long Gloves (Green 45cm)**Howriis**$10.44**4.4★280 rev](https://www.amazon.com/dp/B0BV28LJHZ) [5**MOFOVELY Mens Medieval Steampunk Tailcoat Jacket Victorian Pirate Coat Renaissance Tailcoat Jacket Costume(S Green)**MOFOVELY**$40.58**4.4★164 rev](https://www.amazon.com/dp/B0F2FL2GLP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Aczyoxw Green Costume Accessories with Stripe Tie Blue Glasses Gloves Pink Pom-Pom and Bass Prop for Halloween Cosplay Party**Aczyoxw**$7.52**6 rev6mo ago](https://www.amazon.com/dp/B0GCMT578S) [**Green Costume Accessories Top Hat Book Character Costume Accessory Set for Women Adult Cosplay Halloween Party**Hikkcos**$19.68**8 rev7mo ago](https://www.amazon.com/dp/B0G42F9JMV) [**KDAFJLKD Medieval Clothing Costume Steampunk Coat Tailcoat Men Halloween Renaissance Vampire Costumes for Adults (Green XX-Large)**KDAFJLKD**$20.10**136 rev8mo ago](https://www.amazon.com/dp/B0FY2MX6JR) [**Alaxciax Oncele Costume Accessories Green Costume Accessories Stripe Tie with Blue Glasses Gloves Pink Pom-Pom for Men Women for World Book Day Book Character Dress Up Halloween Cosplay**Alaxciax**$12.14**27 rev9mo ago](https://www.amazon.com/dp/B0FVF4Z7BP) [**EQVYG 5 Pack Halloween Costume Accessories Adult Stripe Tie Sunglasses Green Gloves Pom Pom Brooch Chain Women Cosplay Party Set for onceler**EQVYG**$16.96**10 rev9mo ago](https://www.amazon.com/dp/B0FT12GBV4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Fun Costumes Adult Dr. Seuss The Lorax Costume Deluxe Jumpsuit with Plush Hood Hand Covers Foot Covers - Polyester Microfiber Fleece Small Orange**Fun Costumes**$64.57**4.1★**▲ 989%**](https://www.amazon.com/dp/B0CTKTC5K4) [**KDAFJLKD Medieval Clothing Costume Steampunk Coat Tailcoat Men Halloween Renaissance Vampire Costumes for Adults (Green XX-Large)**KDAFJLKD**$20.10**3.8★**▲ 912%**](https://www.amazon.com/dp/B0FY2MX6JR) [**Floraltop 6 Pcs Green Adult Top Hat Costume Accessories for Adult Tie Sunglasses Gloves Brooch Feather Boa for Cosplay Role Play**Floraltop**$32.41**4.4★**▲ 885%**](https://www.amazon.com/dp/B0FRMX9KX8) [**Xpsivponi Mens Colonel White Suit Fast Food Characters Fancy Costume Outfit(Z2790 L)**Xpsivponi**$57.57**4.4★**▲ 861%**](https://www.amazon.com/dp/B0CJRM2KPK) [**Aniler Unisex Costume 15 Halloween Elbow Length 20s Stretchy Cosplay Solid Color Gloves (One Size Green)**Aniler**$8.44**4.4★**▲ 525%**](https://www.amazon.com/dp/B09Y8GLDQB)
**~~View all trending →~~**
## **What buyers say about onceler costume**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**16%
*“Decent quality costume accessories for low price”*
**Value For Money**15%
*“It's a great price point”*
**Durability**14%
*“Everything held up well”*
**Advertised Vs Actual Product**10%
*“It was as expected”*
**Color**8%
*“the color is bright without looking cheap”*
**Size-Overall**6%
*“fit comfortably”*
**Weight Light**5%
*“The pieces are lightweight”*
**Shape/Style**5%
*“Great shape”*
**Strength**5%
*“Sturdy”*
**Ease Of Use**4%
*“Simple”*
### **What buyers complain about **
**Size-Overall**63%
*“runs small”*
**Allergies**7%
*“In addition, I'm allergic to it”*
### **Top return reasons **
**Size-Overall**64%
**Width**8%
**Color**4%
**Quality-Overall**3%
**Advertised Vs Actual Product**3%
**Shape/Style**2%
**Value For Money**2%
**Material Quality**2%
**Chest Fit**2%
**Length**2%
## **Common questions**
- **Is onceler costume profitable to sell on Amazon United States?**
- The niche generates $180K/yr across 21 tracked products. 0 of 8 products launched in the last 360 days are still selling. 90-day search growth is -31.5%. Flapen's verdict: Skip it (44/100).
- **How competitive is the onceler costume niche?**
- 20 brands and 39 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 64% of demand.
- **What do buyers complain about in onceler costume?**
- Top complaints mined from reviews: Size-Overall, Allergies. The return rate is 6.9% — above our launch gate.
- **When does demand for onceler costume peak?**
- Demand peaks in Sep–Oct; the busiest month runs 101.2× the quietest.
- **What does it cost to enter the onceler costume niche?**
- Listings span $7.52–$64.57; the average listing price is $24.53 (sweet spot $15–$100). The average incumbent carries 355 reviews — the moat a new listing must climb.
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