Is step brothers costume profitable to sell on Amazon United States?

The niche generates $49K/yr across 18 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +8.1%. Flapen's verdict: Skip it (38/100).

How competitive is the step brothers costume niche?

13 brands and 13 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 70% of demand.

What do buyers complain about in step brothers costume?

Top complaints mined from reviews: Value For Money, Material Quality, Size-Overall. The return rate is 9.2% — above our launch gate.

When does demand for step brothers costume peak?

Demand peaks in Oct–Nov; the busiest month runs 128.7× the quietest.

What does it cost to enter the step brothers costume niche?

Listings span $10.76–$68.27; the average listing price is $29.80 (sweet spot $15–$100). The average incumbent carries 409 reviews — the moat a new listing must climb.

step brothers costume

Skip it

High returns (9.2%) — this niche doesn't clear our bar today.

Avg price

Incredible$29.80

avg listing price — sweet spot $15–$100

Price range

Great$10.76–$68.27

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

Review moat

Great409.22

avg incumbent reviews — the moat a new listing must climb

Brand share

Good70%

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

Competition

Okay61%

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

Growth

Okay+8.1%

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Conversion

Bad1.2%

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

Market size

Bad$49K

$49K/yr · 143K searches

Returns

Bad9.2%

return rate — above 5% kills the launch gate

Signals Low Review Barrier High Returns Out of Stock

According to Flapen's Amazon United States niche tracking, step brothers costume is a $49K/yr Amazon United States market (143K searches/yr). The top 5 brands hold 70% of demand. Demand peaks in Oct–Nov. Verdict: Skip it — 38/100.

Data updated Jul 21, 2026 · scored weekly · How we score niches

step brothers costume market data

Units sold / yr: 2K–3K; avg 100–250/product
Revenue / yr: $60K–$75K; units × avg price
Conversion rate: 1.2%
Avg BSR: #13,566
Page quality: 0%
Prime: 67%
Sponsored: 78%
Out of stock: 27.9%
Avg brand age: 54 months
Avg seller age: 201 days

Competition & brand share

The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.

Brands

13 rising

Sellers

Top-5 brand share

70%

Top 20: 100%

Top-5 click share

61%

Top 20: 100%

Open market

23%

TeeUnion30%
Herothorn15%
Canlierr10%
Spirit Halloween9%
MNCEGEER7%
Cotwinter6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +8.1% search growth over the last 90 days.

Peak months: Oct, Nov · busiest ÷ quietest = 128.7×

Open Trend

Top step brothers costume search terms

step brothers costume114K/yr +16.1%1.6% conv.
stepbrothers costume16K/yr -19.1%0.7% conv.
step brothers costumes3K/yr +43.2%0.9% conv.
step brother costume3K/yr +45.1%0.0% conv.
step brothers halloween costume3K/yr +181.8%0.0% conv.
step brothers costume for two4K/yr -69.6%2.2% conv.

All search terms

Top step brothers 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★)2 products missing review or click data not plotted

All 18 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

TeeUnion Tuxedo T-Shirt Classic Party Tee Funny Concert Festival Costume Shirt Black

TeeUnion$15.024.6★324 rev

Canlierr 2 Pcs Afro Wig Short Curly Rocker Party Afro Wig 70s 80s Synthetic Fluffy Cosplay Fancy Funny Wigs for Men Women (Black Brown)

Canlierr$19.154.1★58 rev

Herothorn Mens Thick Argyle Sweater Vests Classic V-Neck Knitwear Sleeveless Pullover Autumn Winter Warm Tank Tops Wine

Herothorn$27.384.6★1,355 rev

Herothorn Mens Thick Argyle Sweater Vests Classic V-Neck Knitwear Sleeveless Pullover Autumn Winter Warm Tank Tops Dark Grey

Herothorn$25.384.6★1,355 rev

Cotwinter 2 Pcs Halloween Cosplay Costume Set Afro Fluffy Wigs Pullover Knitwear Vests for Men Women Cosplay Disco Hippie(M)

Cotwinter$39.044.0★21 rev

Newest

by launch date

OUHAICUST Step Brothers Costume Brennan Dale Printed Shirt Adult Halloween Couples Outfit Costumes Comedy Movie Cosplay L/XL

OUHAICUST$27.770 rev

2mo ago

OUHAICUST Step Brothers Costume Brennan Dale Printed Shirt Adult Halloween Couples Outfit Costumes Comedy Movie Cosplay L/XL

OUHAICUST$29.770 rev

2mo ago

Cotwinter 2 Pcs Halloween Cosplay Costume Set Afro Fluffy Wigs Pullover Knitwear Vests for Men Women Cosplay Disco Hippie(M)

Cotwinter$39.0421 rev

11mo ago

500 LEVEL Macklin Celebrini Shirt - Macklin Celebrini & Will Smith San Jose Step Brothers WHT (Black Medium)

500 LEVEL$31.352 rev

1y ago

TeeUnion Tuxedo T-Shirt Classic Party Tee Funny Concert Festival Costume Shirt Black

TeeUnion$15.02324 rev

1y ago

What buyers say about step brothers costume

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

What buyers love

Quality-Overall27%

“Very well made”

Size-Overall24%

“Fit well”

Value For Money11%

“good value”

Material Quality11%

“Great material, all the boys wore it for prom brunch and loved them”

Advertised Vs Actual Product9%

“Met expectations”

Color5%

“the colors are beautiful”

Soft Feel3%

“Soft”

Comfort-Overall3%

“they were very comfortable”

Wig/Artificial Hair Quality3%

“Amazing wigs for Halloween costumes”

Zipper Quality3%

“zipper works well enough for my daughter to use”

What buyers complain about

Value For Money33%

“at over $30 for the shirt I could not afford any accessories”

Material Quality33%

“Cheap material and quality”

Size-Overall17%

“Runs a little small”

Top return reasons

Size-Overall59%

Chest Fit8%

Length5%

Advertised Vs Actual Product3%

Material Quality3%

Waist Fit3%

Color3%

Value For Money2%

Sleeve Fit2%

Wig/Artificial Hair Quality2%

Common questions

Is step brothers costume profitable to sell on Amazon United States?: The niche generates $49K/yr across 18 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +8.1%. Flapen's verdict: Skip it (38/100).
How competitive is the step brothers costume niche?: 13 brands and 13 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 70% of demand.
What do buyers complain about in step brothers costume?: Top complaints mined from reviews: Value For Money, Material Quality, Size-Overall. The return rate is 9.2% — above our launch gate.
When does demand for step brothers costume peak?: Demand peaks in Oct–Nov; the busiest month runs 128.7× the quietest.
What does it cost to enter the step brothers costume niche?: Listings span $10.76–$68.27; the average listing price is $29.80 (sweet spot $15–$100). The average incumbent carries 409 reviews — the moat a new listing must climb.