---
title: "King Costume — $12K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/king-costume"
last_updated: "2026-08-12T17:45:03.245Z"
locale: en
meta:
description: "Amazon product research for king costume: $12K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for king costume: $12K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "King Costume — $12K/mo Amazon US Product Research (2026)"
---
# **King Costume**
**Skip it**
High returns (11.1%) — this niche doesn't clear our bar today.
Market size 30Growth 21Conversion 17Competition 54Returns 3Price range 88Avg price 95Brand share 47Review moat 89Quality gap 80
**Avg price**
**Incredible****$26.46**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****215**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Great****$11.90–$46.83**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Competition**
**Good****53%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****77%**
top-5 brand share — brands hold most of the demand
**Market size**
**Okay****$138K**
$138K/yr · 391K searches
**Growth**
**Bad****-8.3%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****1.3%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Bad****11.1%**
return rate — above 5% kills the launch gate
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
## **Is king costume profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, king costume is a $138K/yr Amazon United States market (391K searches/yr). The top 5 brands hold 77% of demand. Demand peaks in Oct–Nov. Verdict: Skip it — 44/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **king costume market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **6K–8K**
- avg 0–100/product
- **Revenue / yr**
- **$159K–$212K**
- units × avg price
- **Conversion rate**
- **1.3%**
- **Avg BSR**
- **#679**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **73%**
- **Out of stock**
- **10.6%**
- **Avg brand age**
- **43 months**
- **Avg seller age**
- **192 days**
## **Competition: brands, sellers & click share**
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**17 **▼falling
**Sellers**
**32**
**Top-5 brand share**
**77%**
Top 20: 100%
**Top-5 click share**
**53%**
Top 20: 92%
**Open market**
**20%**
- tiggell57% - CLOOOUDS6% - YYKKDD6% - California Costumes4% - Regenboog3% - Giftdigger3%
## **king costume demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -8.3% search growth over the last 90 days.
50K30KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Oct, Nov · busiest ÷ quietest = 9.6×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/king-costume/trend)
## **Top king costume search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **king costume**100K/yr-7.5%0.8% conv. - **king costume for men**84K/yr-28.5%0.8% conv. - **king cape**33K/yr+5.3%1.3% conv. - **king robe**24K/yr+29.1%1.0% conv. - **queen cape**17K/yr-19.2%0.5% conv. - **king outfit**11K/yr+7.5%1.0% conv. - **royal cape**12K/yr-11.2%1.0% conv. - **queen robe**10K/yr-18.2%0.5% conv. - **kings robe**8K/yr+20.1%1.3% conv. - **medieval king costume**7K/yr-2.9%0.5% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/king-costume/search-terms)
## **Top king costume 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%10%$14K20%$28K30%$42K40%$55K1101001K10K Reviews — right = deep review moatMarket 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.
### **Top sellers**
by 90-day click share
[1**King Robe Costume Queen Robe Royal Cosplay Cape Medieval Prince Dress Up for Halloween Cosplay Stage Performance Carnival (Blue Adult Size)**tiggell**$13.13**4.0★106 rev](https://www.amazon.com/dp/B0C7KSPC25) [2**King Robe Costume Queen Robe Royal Cosplay Cape Medieval Prince Dress Up for Halloween Cosplay Stage Performance Carnival (Green Adult Size)**tiggell**$12.86**4.0★106 rev](https://www.amazon.com/dp/B0C7KRFHMC) [3**CLOOOUDS King Costume Set Red Cloak Golden Crown And Scepter Set Prince Capes Halloween Costume For Kids Teen Adult**CLOOOUDS**$19.57**4.2★328 rev](https://www.amazon.com/dp/B0CDV2C38H) [4**YYKKDD Regal Red Velvet Mens King Cloak and Costume Set Medieval Royal Robe Hat and Scepter for Halloween & Christmas Parties (47 - 55)**YYKKDD**$21.62**4.6★41 rev](https://www.amazon.com/dp/B0G657VY28) [5**King Robe Costume Queen Robe Royal Cosplay Cape Medieval Prince Dress Up for Halloween Cosplay Stage Performance Carnival (Red Adult Size)**tiggell**$13.75**4.0★106 rev](https://www.amazon.com/dp/B0C7KRRRPF)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Giftdigger King Costume for Men Adult King Cape Queen Costume Women Red Queen Cape Royal Capes Kings Robe for Men Burgundy/51in**Giftdigger**$36.26**45 rev5mo ago](https://www.amazon.com/dp/B0GHR914B4) [**YYKKDD Regal Red Velvet Mens King Cloak and Costume Set Medieval Royal Robe Hat and Scepter for Halloween & Christmas Parties (47 - 55)**YYKKDD**$21.62**41 rev7mo ago](https://www.amazon.com/dp/B0G657VY28) [**COSMAKER Medieval King Costume Royal Queen Velvet Robe with Golden Imperial Crown and Scepter (M-Adult)**COSMAKER**$30.33**2 rev9mo ago](https://www.amazon.com/dp/B0FT7LWZ58) [**Mens Steampunk Gothic Medieval Vintage Jacket for Halloween (Black XX-Large)**QPAXUCR**$29.42**55 rev1y ago](https://www.amazon.com/dp/B0FF18Z8WX) [**AGCOAH Womens Medieval Cloak Renaissance Victorian Deluxe Stand Collar Velvet Gold Trim Red Cape for Adult Halloween Cosplay Dress Up 43.3Inch**AGCOAH**$28.09**56 rev1y ago](https://www.amazon.com/dp/B0DTJVFJPN)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Mens Steampunk Gothic Medieval Vintage Jacket for Halloween (Black XX-Large)**QPAXUCR**$29.42**4.2★**▲ 213%**](https://www.amazon.com/dp/B0FF18Z8WX) [**YYKKDD Regal Red Velvet Mens King Cloak and Costume Set Medieval Royal Robe Hat and Scepter for Halloween & Christmas Parties (47 - 55)**YYKKDD**$21.62**4.6★**▲ 181%**](https://www.amazon.com/dp/B0G657VY28) [**2pcs King and Queen Robe Costume Royal Cosplay Cape Medieval Prince Dress Up for Halloween Cosplay Stage Performance Carnival (Red Adult Size)**tiggell**$19.02**3.5★**▲ 162%**](https://www.amazon.com/dp/B0C7KSD2BB) [**Giftdigger King Costume for Men Adult King Cape Queen Costume Women Red Queen Cape Royal Capes Kings Robe for Men Burgundy/51in**Giftdigger**$36.26**4.4★**▲ 150%**](https://www.amazon.com/dp/B0GHR914B4) [**King Robe Costume Queen Robe Royal Cosplay Cape Medieval Prince Dress Up for Halloween Cosplay Stage Performance Carnival (Red Adult Size)**tiggell**$13.75**4.0★**▲ 116%**](https://www.amazon.com/dp/B0C7KRRRPF)
**~~View all trending →~~**
## **What reviews say buyers love and hate about king costume**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“Great quality”*
**Value For Money**17%
*“Value for money”*
**Size-Overall**11%
*“It fits great”*
**Advertised Vs Actual Product**10%
*“This is exactly what I was looking for”*
**Material Quality**4%
*“The material was beautiful”*
**Comfort-Overall**4%
*“Very Comfortable and well made”*
**Color**3%
*“The capes are rich in color”*
**Stitch/Finish/Polish**3%
*“Great costume finisher for your Medieval and Renaissance looks”*
**Weight Light**2%
*“which keeps it lightweight”*
**Durability**2%
*“they're pretty durable”*
### **What buyers complain about **
**Durability**15%
*“broke instantly”*
**Quality-Overall**13%
*“Poor quality crown”*
**Size-Overall**12%
*“the gloves are too small”*
**Velcro Quality**7%
*“Velcro fell off”*
**Strap/String Quality**6%
*“the string to tie the cape broke in less than 4 hours”*
**Thickness**5%
*“not thick”*
**Strength**3%
*“Crown is a little flimsy”*
**Precious Gemstone**3%
*“All the gems came off the crown”*
**Material Quality**3%
*“Very cheap material”*
**Adhesion/Stickiness**2%
*“One staple was sticking up”*
### **Top return reasons **
**Size-Overall**36%
**Length**15%
**Quality-Overall**7%
**Material Quality**6%
**Strap/String Quality**5%
**Advertised Vs Actual Product**5%
**Thin**3%
**Defective Material/Parts**2%
**Color**2%
**Durability**2%
## **Common king costume questions**
- **Is king costume profitable to sell on Amazon United States?**
- The niche generates $138K/yr across 26 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -8.3%. Flapen's verdict: Skip it (44/100).
- **How competitive is the king costume niche?**
- 17 brands and 32 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 77% of demand.
- **What do buyers complain about in king costume?**
- Top complaints mined from reviews: Durability, Quality-Overall, Size-Overall. The return rate is 11.1% — above our launch gate.
- **When does demand for king costume peak?**
- Demand peaks in Oct–Nov; the busiest month runs 9.6× the quietest.
- **What does it cost to enter the king costume niche?**
- Listings span $11.90–$46.83; the average listing price is $26.46 (sweet spot $15–$100). The average incumbent carries 215 reviews — the moat a new listing must climb.
## **Related niches to research next**
Same-category niches scoring near this one — the next ones worth researching.
- 72 [**first communion gifts for boys**](https://flapen.com/research/us/clothing-shoes-jewelry/first-communion-gifts-for-boys)$398K/yr+223.5%**Worth a look**- 72 [**fifa world cup 2026 tshirt**](https://flapen.com/research/us/clothing-shoes-jewelry/fifa-world-cup-2026-tshirt)$177K/yr>1,000%**Worth a look**- 72 [**american flag hat**](https://flapen.com/research/us/clothing-shoes-jewelry/american-flag-hat)$764K/yr+428.8%**Worth a look**- 72 [**white socks men**](https://flapen.com/research/us/clothing-shoes-jewelry/white-socks-men)$3.0M/yr+13.3%**Launch it**- 72 [**american flag overalls**](https://flapen.com/research/us/clothing-shoes-jewelry/american-flag-overalls)$662K/yr>1,000%**Worth a look**- 73 [**white ankle socks for men**](https://flapen.com/research/us/clothing-shoes-jewelry/white-ankle-socks-for-men)$448K/yr+88.3%**Worth a look**[**All Clothing, Shoes & Jewelry niches **](https://flapen.com/research/us/clothing-shoes-jewelry)