Is moon knight costume profitable to sell on Amazon United States?

The niche generates $14K/yr across 31 tracked products. 0 of 13 products launched in the last 360 days are still selling. 90-day search growth is -6.8%. Flapen's verdict: Skip it (43/100).

How competitive is the moon knight costume niche?

20 brands and 31 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 64% of demand.

What do buyers complain about in moon knight costume?

Top complaints mined from reviews: Quality-Overall, Strap/String Quality, Size-Overall. The return rate is 10.6% — above our launch gate.

When does demand for moon knight costume peak?

Demand peaks in Aug–Sep–Oct; the busiest month runs 21.2× the quietest.

What does it cost to enter the moon knight costume niche?

Listings span $12.88–$85.26; the average listing price is $34.97 (sweet spot $15–$100). The average incumbent carries 319 reviews — the moat a new listing must climb.

moon knight costume

Skip it

A small market ($14K/yr) — this niche doesn't clear our bar today.

Avg price

Incredible$34.97

avg listing price — sweet spot $15–$100

Price range

Great$12.88–$85.26

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

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Review moat

Great319.1

avg incumbent reviews — the moat a new listing must climb

Brand share

Good64%

top-5 brand share — brands hold most of the demand

Competition

Good49%

top-5 click share — leaders hold, buyers still browse

Growth

Bad-6.8%

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

Returns

Bad10.6%

return rate — above 5% kills the launch gate

Conversion

Bad0.3%

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

Market size

Bad$14K

$14K/yr · 133K searches

Signals No Dominant Brand Low Review Barrier High Returns Out of Stock

According to Flapen's Amazon United States niche tracking, moon knight costume is a $14K/yr Amazon United States market (133K searches/yr). The top 5 brands hold 64% of demand. Demand peaks in Aug–Sep–Oct. Verdict: Skip it — 43/100.

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

moon knight costume market data

Units sold / yr: 250–500; avg 0–100/product
Revenue / yr: $9K–$17K; units × avg price
Conversion rate: 0.3%
Avg BSR: #38,049
Page quality: 0%
Prime: 55%
Sponsored: 42%
Out of stock: 20.4%
Avg brand age: 47 months
Avg seller age: 183 days

Competition & brand share

The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.

Brands

20 rising

Sellers

Top-5 brand share

64%

Top 20: 100%

Top-5 click share

49%

Top 20: 89%

Open market

29%

KESOCORAY18%
Maturead15%
Yazkimo13%
Bemeiren11%
Boomtrader7%
Missanabie7%

Demand & seasonality

Weekly Amazon search volume, last 89 weeks — -6.8% search growth over the last 90 days.

Peak months: Aug, Sep, Oct · busiest ÷ quietest = 21.2×

Open Trend

Top moon knight costume search terms

moon knight costume94K/yr -7.6%0.2% conv.
moon knight cosplay18K/yr +4.0%0.1% conv.
moon knight costume men5K/yr -34.2%0.0% conv.
moon knight costume kids7K/yr -32.9%0.5% conv.
moon knight costume adult5K/yr +1.7%0.5% conv.
moonlight costume4K/yr -12.1%0.0% conv.

All search terms

Top moon knight 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.

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

Maturead Kids Knight Costume 2026 Halloween Party Cosplay Outfits Jumpsuit Hooded Cloak for Boys

Maturead$33.484.4★383 rev

KESOCORAY 3 Pieces Moon Mask Latex Helmet Knight Set White Gloves Neck Mask Helmet Cosplay Costume Mask Halloween Masquerade Prop

KESOCORAY$26.683.8★163 rev

Bemeiren Bodysuit Superhero Cosplay Jumpsuits Full Body Zentai Unitard Halloween Party Costume

Bemeiren$57.733.9★32 rev

Yazkimo Unisex Adult Moon Knight Cosplay Costume Sweatshirt Hooded Zipper Coat 3D Printed Casual Jacket Hoodies (US Alpha X-Small Regular Regular Zipper 1)

Yazkimo$29.735.0★1 rev

Missanabie Mens Medieval Renaissance Knight LARP Outfit Pirate Cosplay Robe Halloween Viking Costume Accessories Set(BK L)

Missanabie$33.173.8★17 rev

Newest

by launch date

XYFDHJY Medieval Hooded Sleeveless Surcoat Renaissance Tunic Cloak for Halloween Cosplay (Black M)

XYFDHJY$20.125 rev

2mo ago

TZIISOA Men Cloak Robe Hooded Cosplay Adult Tunic Long Cape Party Costume(Z3921DWH 3XL)

TZIISOA$12.9375 rev

2mo ago

Missanabie Mens Medieval Renaissance Knight LARP Outfit Pirate Cosplay Robe Halloween Viking Costume Accessories Set(BK L)

Missanabie$33.1717 rev

5mo ago

Missanabie Mens Medieval Renaissance Knight LARP Outfit Pirate Cosplay Robe Halloween Viking Costume Accessories Set(BK S)

Missanabie$32.3917 rev

5mo ago

Mens Knight Full Bodysuit with Mask and Cape set Cosplay Costumes 3D Print Zentai Jumpsuit for Adult Halloween Role Play

Bemeiren$58.2032 rev

6mo ago

What buyers say about moon knight costume

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

What buyers love

Material Quality20%

“The fabric is comfortable”

Quality-Overall16%

“This sleeveless surcoat is better quality than I expected”

Size-Overall14%

“Fits well”

Shape/Style9%

“Stylish”

Comfort-Overall5%

“Comfy and stylish, and packed well without wrinkling”

Weight Light5%

“Lightweight”

Design-Overall4%

“Very stylish fun and comfortable design”

Value For Money4%

“Excellent value for the price”

Stretchability/Expandability/Elasticity4%

“stretches well and should accompdate any fit issues”

Advertised Vs Actual Product4%

“Definitely did the job”

What buyers complain about

Quality-Overall38%

“Poor quality”

Strap/String Quality13%

“while also missing the string to lace up the top”

Size-Overall8%

“the surcoat is quite long on him”

Advertised Vs Actual Product5%

“I was expecting a Faux suede fabric and instead got something akin to faux velvet”

Material Quality5%

“I was expecting a Faux suede fabric”

Top return reasons

Size-Overall46%

Length10%

Advertised Vs Actual Product8%

Material Quality7%

Chest Fit7%

Shoulder Fit4%

Sleeve Fit3%

Waist Fit2%

Quality-Overall2%

Value For Money1%

Common questions

Is moon knight costume profitable to sell on Amazon United States?: The niche generates $14K/yr across 31 tracked products. 0 of 13 products launched in the last 360 days are still selling. 90-day search growth is -6.8%. Flapen's verdict: Skip it (43/100).
How competitive is the moon knight costume niche?: 20 brands and 31 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 64% of demand.
What do buyers complain about in moon knight costume?: Top complaints mined from reviews: Quality-Overall, Strap/String Quality, Size-Overall. The return rate is 10.6% — above our launch gate.
When does demand for moon knight costume peak?: Demand peaks in Aug–Sep–Oct; the busiest month runs 21.2× the quietest.
What does it cost to enter the moon knight costume niche?: Listings span $12.88–$85.26; the average listing price is $34.97 (sweet spot $15–$100). The average incumbent carries 319 reviews — the moat a new listing must climb.