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.

King Costume

Skip it

High returns (11.1%) — this niche doesn't clear our bar today.

Avg price

Incredible$26.46

avg listing price — sweet spot $15–$100

Review moat

Great215

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

Great4.2★

avg incumbent rating — lower means beatable quality

Competition

Good53%

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

Brand share

Okay77%

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

Bad1.3%

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

Returns

Bad11.1%

return rate — above 5% kills the launch gate

Signals High Returns

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

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

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.

Peak months: Oct, Nov · busiest ÷ quietest = 9.6×

Open Trend

Top king costume search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

king costume100K/yr -7.5%0.8% conv.
king costume for men84K/yr -28.5%0.8% conv.
king cape33K/yr +5.3%1.3% conv.
king robe24K/yr +29.1%1.0% conv.
queen cape17K/yr -19.2%0.5% conv.
king outfit11K/yr +7.5%1.0% conv.
royal cape12K/yr -11.2%1.0% conv.
queen robe10K/yr -18.2%0.5% conv.
kings robe8K/yr +20.1%1.3% conv.
medieval king costume7K/yr -2.9%0.5% conv.

All 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.

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

King Robe Costume Queen Robe Royal Cosplay Cape Medieval Prince Dress Up for Halloween Cosplay Stage Performance Carnival (Blue Adult Size)

tiggell$13.134.0★106 rev

King Robe Costume Queen Robe Royal Cosplay Cape Medieval Prince Dress Up for Halloween Cosplay Stage Performance Carnival (Green Adult Size)

tiggell$12.864.0★106 rev

CLOOOUDS King Costume Set Red Cloak Golden Crown And Scepter Set Prince Capes Halloween Costume For Kids Teen Adult

CLOOOUDS$19.574.2★328 rev

YYKKDD Regal Red Velvet Mens King Cloak and Costume Set Medieval Royal Robe Hat and Scepter for Halloween & Christmas Parties (47 - 55)

YYKKDD$21.624.6★41 rev

King Robe Costume Queen Robe Royal Cosplay Cape Medieval Prince Dress Up for Halloween Cosplay Stage Performance Carnival (Red Adult Size)

tiggell$13.754.0★106 rev

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$36.2645 rev

5mo ago

YYKKDD Regal Red Velvet Mens King Cloak and Costume Set Medieval Royal Robe Hat and Scepter for Halloween & Christmas Parties (47 - 55)

YYKKDD$21.6241 rev

7mo ago

COSMAKER Medieval King Costume Royal Queen Velvet Robe with Golden Imperial Crown and Scepter (M-Adult)

COSMAKER$30.332 rev

9mo ago

Mens Steampunk Gothic Medieval Vintage Jacket for Halloween (Black XX-Large)

QPAXUCR$29.4255 rev

1y ago

AGCOAH Womens Medieval Cloak Renaissance Victorian Deluxe Stand Collar Velvet Gold Trim Red Cape for Adult Halloween Cosplay Dress Up 43.3Inch

AGCOAH$28.0956 rev

1y ago

What reviews say buyers love and hate about king costume

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

What buyers love

Quality-Overall18%

“Great quality”

Value For Money17%

“Value for money”

Size-Overall11%

“It fits great”

Advertised Vs Actual Product10%

“This is exactly what I was looking for”

Material Quality4%

“The material was beautiful”

Comfort-Overall4%

“Very Comfortable and well made”

Color3%

“The capes are rich in color”

Stitch/Finish/Polish3%

“Great costume finisher for your Medieval and Renaissance looks”

Weight Light2%

“which keeps it lightweight”

Durability2%

“they're pretty durable”

What buyers complain about

Durability15%

“broke instantly”

Quality-Overall13%

“Poor quality crown”

Size-Overall12%

“the gloves are too small”

Velcro Quality7%

“Velcro fell off”

Strap/String Quality6%

“the string to tie the cape broke in less than 4 hours”

Thickness5%

“not thick”

Strength3%

“Crown is a little flimsy”

Precious Gemstone3%

“All the gems came off the crown”

Material Quality3%

“Very cheap material”

Adhesion/Stickiness2%

“One staple was sticking up”

Top return reasons

Size-Overall36%

Length15%

Quality-Overall7%

Material Quality6%

Strap/String Quality5%

Advertised Vs Actual Product5%

Thin3%

Defective Material/Parts2%

Color2%