---
title: "Knight Costume — $15K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/knight-costume"
last_updated: "2026-08-12T16:50:01.638Z"
locale: en
meta:
description: "Amazon product research for knight costume: $15K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for knight costume: $15K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Knight Costume — $15K/mo Amazon US Product Research (2026)"
---
# **Knight Costume**
**Worth a look**
Shows a sweet-spot price point ($33.25 avg), but weak search conversion (0.5%) keeps it on the watch list.
Market size 37Growth 36Conversion 7Competition 84Returns 12Price range 73Avg price 95Brand share 82Review moat 82Quality gap 78
**Avg price**
**Incredible****$33.25**
avg listing price — sweet spot $15–$100
**Competition**
**Great****31%**
top-5 click share — an open shelf
**Brand share**
**Great****53%**
top-5 brand share — no brand owns this niche
**Review moat**
**Great****351.24**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Price range**
**Good****$16.87–$131.48**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Okay****$183K**
$183K/yr · 1000K searches
**Growth**
**Okay****+8.9%**
90-day search growth — must beat 0% to launch
**Returns**
**Bad****8.5%**
return rate — above 5% kills the launch gate
**Conversion**
**Bad****0.5%**
search→purchase rate — share of searches ending in a sale
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** 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%")
## **Is knight costume profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, knight costume is a $183K/yr Amazon United States market (1000K searches/yr). The top 5 brands hold 53% of demand. Demand peaks in Sep–Oct. Verdict: Worth a look — 54/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **knight costume market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **8K–10K**
- avg 0–100/product
- **Revenue / yr**
- **$266K–$333K**
- units × avg price
- **Conversion rate**
- **0.5%**
- **Avg BSR**
- **#564**
- **Page quality**
- **0%**
- **Prime**
- **96%**
- **Sponsored**
- **84%**
- **Out of stock**
- **5.7%**
- **Avg brand age**
- **42 months**
- **Avg seller age**
- **187 days**
## **Competition: brands, sellers & click share**
Clicks spread well past the top 5 (31% combined) — an open shelf where new products get seen.
**Brands**
**31 **▼falling
**Sellers**
**69**
**Top-5 brand share**
**53%**
Top 20: 94%
**Top-5 click share**
**31%**
Top 20: 66%
**Open market**
**40%**
- Missanabie15% - JEMITOP12% - California Costumes11% - Irtysh9% - UQJE7% - ALAMIYA7%
## **knight costume demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +8.9% search growth over the last 90 days.
90K70KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct · busiest ÷ quietest = 11.4×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/knight-costume/trend)
## **Top knight costume search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **knight costume**345K/yr+34.9%0.4% conv. - **knight costume kids**160K/yr-19.2%1.1% conv. - **knight costume men**153K/yr-2.0%0.4% conv. - **knight costume for boys**69K/yr-22.1%1.3% conv. - **kids knight costume**41K/yr+7.6%1.2% conv. - **medieval knight costume**30K/yr+15.8%0.3% conv. - **mens knight costume**27K/yr+36.9%0.4% conv. - **medieval knight costume men**25K/yr+8.1%0.4% conv. - **boys knight costume**26K/yr-7.4%0.8% conv. - **knight outfit**9K/yr+29.0%0.3% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/knight-costume/search-terms)
## **Top knight 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%3%$5K6%$11K9%$16K12%$22K101001K10K 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**Missanabie Mens Medieval Renaissance Knight LARP Outfit Pirate Cosplay Robe Halloween Viking Costume Accessories Set(BK S)**Missanabie**$32.39**3.8★17 rev](https://www.amazon.com/dp/B0GGWKPSC2) [2**Renaissance Faux Chain Mail Armor Tunic Shirt Coif Medieval Knight Cowl Crusader Costume Outfit Bracers Waist Belt Set(L) Silver Gray**Irtysh**$36.03**3.7★201 rev](https://www.amazon.com/dp/B0C2V7CP25) [3**Medieval Knight Leather Belt Shawl Men Renaissance Half Shoulder Cape Scarf Sword Frog Buckle Bracers Retro Magic Cork Potion Bottle Accessories(Type11)**ALAMIYA**$42.34**4.3★2,553 rev](https://www.amazon.com/dp/B0BCP5Q9VS) [4**8 Pcs Mens Renaissance Costume Halloween Medieval Pirate Shirt Pant Viking Costume Accessories Set (Classic Color Medium)**Vanderdyken**$47.25**4.3★647 rev](https://www.amazon.com/dp/B0D66DMFRH) [5**California Costumes Knights Surcoat Adult Costume (Red) Large/X-Large**California Costumes**$34.54**4.2★205 rev](https://www.amazon.com/dp/B08FXVCDBP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**JEMITOP Mens Renaissance Cotton Lace Up Shirt Mandarin Collar Long Sleeve Retro Costume for Medieval Pirate Viking Halloween Knight Vampire Without Belt Black L**JEMITOP**$23.68**24 rev5mo ago](https://www.amazon.com/dp/B0GL1GCY7K) [**JEMITOP Mens Pirate Renaissance Cotton Arm Banded Shirt Retro Long Sleeve Lace Up Costume for Medieval Viking Knight Halloween Cosplay Without Belt Black L**JEMITOP**$25.92**11 rev5mo ago](https://www.amazon.com/dp/B0GL1H3SHJ) [**JEMITOP Mens Renaissance Cotton Lace Up Shirt Mandarin Collar Long Sleeve Retro Costume for Medieval Pirate Viking Halloween Knight Vampire Without Belt Army Green L**JEMITOP**$23.59**24 rev5mo ago](https://www.amazon.com/dp/B0GL1BPNHD) [**JEMITOP Mens Renaissance Cotton Lace Up Shirt Mandarin Collar Long Sleeve Retro Costume for Medieval Pirate Viking Halloween Knight Vampire Without Belt Navy Blue L**JEMITOP**$23.04**24 rev5mo ago](https://www.amazon.com/dp/B0GL1R3TV8) [**Missanabie Mens Medieval Renaissance Knight LARP Outfit Pirate Cosplay Robe Halloween Viking Costume Accessories Set(BK S)**Missanabie**$32.39**17 rev5mo ago](https://www.amazon.com/dp/B0GGWKPSC2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**JEMITOP Mens Renaissance Cotton Lace Up Shirt Mandarin Collar Long Sleeve Retro Costume for Medieval Pirate Viking Halloween Knight Vampire Without Belt Black L**JEMITOP**$23.68**4.6★**▲ 201%**](https://www.amazon.com/dp/B0GL1GCY7K) [**JEMITOP Mens Pirate Renaissance Cotton Arm Banded Shirt Retro Long Sleeve Lace Up Costume for Medieval Viking Knight Halloween Cosplay Without Belt Black L**JEMITOP**$25.92**4.8★**▲ 200%**](https://www.amazon.com/dp/B0GL1H3SHJ) [**JEMITOP Mens Renaissance Cotton Lace Up Shirt Mandarin Collar Long Sleeve Retro Costume for Medieval Pirate Viking Halloween Knight Vampire Without Belt Army Green L**JEMITOP**$23.59**4.6★**▲ 200%**](https://www.amazon.com/dp/B0GL1BPNHD) [**JEMITOP Mens Renaissance Cotton Lace Up Shirt Mandarin Collar Long Sleeve Retro Costume for Medieval Pirate Viking Halloween Knight Vampire Without Belt Navy Blue L**JEMITOP**$23.04**4.6★**▲ 200%**](https://www.amazon.com/dp/B0GL1R3TV8) [**JEMITOP Mens Renaissance Pure Cotton Lace Up Shirt V-Neck Long Sleeve Retro Costume for Medieval Pirate Viking Knight Vampire Halloween Black L**JEMITOP**$19.78**4.6★**▲ 191%**](https://www.amazon.com/dp/B0G5X4HN4N)
**~~View all trending →~~**
## **What reviews say buyers love and hate about knight costume**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**22%
*“The fit is true to size”*
**Quality-Overall**16%
*“The quality has been great considering my three year old is pretty rough”*
**Comfort-Overall**6%
*“comfortable”*
**Value For Money**5%
*“Worth the price”*
**Fun/Entertainment Experience**4%
*“Fun set”*
**Material Quality**4%
*“Material is light weight and is comfortable”*
**Durability**3%
*“they seem durable enough”*
**Weight Light**3%
*“lightweight shield”*
**Gifting Purpose**2%
*“Christmas present”*
**Shape/Style**2%
*“Husband loves the fit and the style”*
### **What buyers complain about **
**Size-Overall**17%
*“Too small”*
**Quality-Overall**17%
*“The overall quality is moderate”*
**Strap/String Quality**8%
*“Cheap and awkward straps”*
**Durability**6%
*“seems ready to break”*
**Material Quality**3%
*“Cheap made plastic”*
**Advertised Vs Actual Product**2%
*“does not match the photos entirely”*
**Weight Heavy**2%
*“It is heavy though”*
**Color**2%
*“Sword and Shield Bleeds Color Everywhere”*
**Smell**2%
*“Feels and smells like tinsel”*
**Warmth**1%
*“The material is not warm or stretchy”*
### **Top return reasons **
**Size-Overall**53%
**Material Quality**6%
**Advertised Vs Actual Product**5%
**Length**4%
**Quality-Overall**4%
**Waist Fit**3%
**Chest Fit**2%
**Shoulder Fit**2%
**Defective Material/Parts**2%
**Weight Heavy**2%
## **Common knight costume questions**
- **Is knight costume profitable to sell on Amazon United States?**
- The niche generates $183K/yr across 68 tracked products. 0 of 18 products launched in the last 360 days are still selling. 90-day search growth is +8.9%. Flapen's verdict: Worth a look (54/100).
- **How competitive is the knight costume niche?**
- 31 brands and 69 sellers compete. The top 5 products take 31% of clicks and top 5 brands hold 53% of demand.
- **What do buyers complain about in knight costume?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Strap/String Quality. The return rate is 8.5% — above our launch gate.
- **When does demand for knight costume peak?**
- Demand peaks in Sep–Oct; the busiest month runs 11.4× the quietest.
- **What does it cost to enter the knight costume niche?**
- Listings span $16.87–$131.48; the average listing price is $33.25 (sweet spot $15–$100). The average incumbent carries 351 reviews — the moat a new listing must climb.
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