Is finn the human costume profitable to sell on Amazon United States?

The niche generates $28K/yr across 17 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +18.3%. Flapen's verdict: Skip it (38/100).

How competitive is the finn the human costume niche?

14 brands and 20 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 73% of demand.

What do buyers complain about in finn the human costume?

Top complaints mined from reviews: Size-Overall, Quality-Overall, Hard Feel. The return rate is 4.1%.

When does demand for finn the human costume peak?

Demand peaks in Sep–Oct–Nov; the busiest month runs 60.2× the quietest.

What does it cost to enter the finn the human costume niche?

Listings span $8.25–$30.48; the average listing price is $19.13 (sweet spot $15–$100). The average incumbent carries 1,184 reviews — the moat a new listing must climb.

Finn the Human Costume

Skip it

A small market ($28K/yr) — this niche doesn't clear our bar today.

Avg price

Great$19.13

avg listing price — sweet spot $15–$100

Price range

Good$8.25–$30.48

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

Review moat

Good1,184.12

avg incumbent reviews — the moat a new listing must climb

Brand share

Good73%

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

Growth

Okay+18.3%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Returns

Okay4.1%

return rate — above 5% kills the launch gate

Competition

Okay64%

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

Conversion

Bad0.6%

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

Market size

Bad$28K

$28K/yr · 237K searches

Is finn the human costume profitable on Amazon?

According to Flapen's Amazon United States niche tracking, finn the human costume is a $28K/yr Amazon United States market (237K searches/yr). The top 5 brands hold 73% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Skip it — 38/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

finn the human costume market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 3K–4K; avg 0–100/product
Revenue / yr: $57K–$77K; units × avg price
Conversion rate: 0.6%
Avg BSR: #29,451
Page quality: 0%
Prime: 88%
Sponsored: 59%
Out of stock: 19.8%
Avg brand age: 49 months
Avg seller age: 179 days

Competition: brands, sellers & click share

The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.

Brands

14 falling

Sellers

Top-5 brand share

73%

Top 20: 100%

Top-5 click share

64%

Top 20: 100%

Open market

22%

Adventure Time40%
Cosplaya12%
Rose's Secret9%
Zando7%
Munetoshi5%
GZHOK5%

finn the human costume demand & seasonality

Weekly Amazon search volume, last 84 weeks — +18.3% search growth over the last 90 days.

Peak months: Sep, Oct, Nov · busiest ÷ quietest = 60.2×

Open Trend

Top finn the human costume search terms shoppers use

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

adventure time costume64K/yr +41.7%0.5% conv.
finn the human costume50K/yr +66.1%2.1% conv.
adventure time cosplay9K/yr -2.5%0.2% conv.
finn costume22K/yr +59.5%1.2% conv.
finn the human10K/yr -18.7%0.4% conv.
adventure time costumes15K/yr +6.0%0.1% conv.
finn adventure time8K/yr -13.7%0.7% conv.
finn adventure time costume21K/yr +28.5%2.0% conv.
adventure time finn costume19K/yr -6.6%1.4% conv.
fin adventure time costume7K/yr +47.5%1.9% conv.

All search terms

Top finn the human 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 17 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Adventure Time Mens Finn Character Hat White One Size

Adventure Time$19.134.5★1,358 rev

Cosplaya Mens Gold King Crown Costume Hat Prince Medieval Cosplay Adventure Womens Halloween Christmas Costumes One Size

Cosplaya$19.324.9★22 rev

Zando Womens Stripe Over the Knee Socks Thin Long Tube Stockings Casual Thigh High Cosplay Legging Sock for Women G White w Blue

Zando$10.184.5★14,760 rev

Roses Secret Adventure Finn Hat: Costume Time Cap The Human Character Cosplay Merch Gifts - Plush Beanie Merchandise Gifts

Rose's Secret$9.504.2★76 rev

Munetoshi 24 Foam Golden Battle Sword Adventure Fantasy Cosplay Costume Prop

Munetoshi$22.384.7★128 rev

Newest

by launch date

Jococs White Character Hat and Green Backpack Anime Costume Set Funny Costume Accessories for Halloween Party

Jococs$21.301 rev

3mo ago

Mewcho Green Backpack 15.35 for the Human Costume Cartoon Green Bag Merch Gifts Character Cosplay Accessories for Adults

Mewcho$26.4515 rev

5mo ago

Roses Secret Costume Backpack for Adventure Times Cosplay: Anime Merch Character Finn the Human Green Bag

Rose's Secret$21.9051 rev

9mo ago

Roses Secret Adventure Finn Hat: Costume Time Cap The Human Character Cosplay Merch Gifts - Plush Beanie Merchandise Gifts

Rose's Secret$9.5076 rev

10mo ago

Cosplaya Mens Gold King Crown Costume Hat Prince Medieval Cosplay Adventure Womens Halloween Christmas Costumes One Size

Cosplaya$19.3222 rev

1y ago

What reviews say buyers love and hate about finn the human costume

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

What buyers love

Quality-Overall18%

“These are the reciprocal quality for price”

Advertised Vs Actual Product13%

“It looks like the pictures”

Size-Overall8%

“they fit perfectly with sone extra room for a couple more things to fit in”

Comfort-Overall8%

“comfortable”

Soft Feel6%

“It is plush and soft”

Weight Light5%

“the lightweight design makes it ideal for kids or even as a fun cosplay accessory”

Color5%

“Bright colors”

Thickness4%

“Good quality, thicker than expected”

Portability3%

“it worked like a charm while allowing me to carry my stuff”

Design-Overall3%

“The value is fair because the design is eye-catching and fun,”

What buyers complain about

Size-Overall19%

“Runs small”

Quality-Overall10%

“Not very well made”

Hard Feel4%

“a little tough”

Pain Relief-Overall4%

“it may still hurt lmao”

Advertised Vs Actual Product4%

“This pic is NOT ACCURATE on sizing”

Portability4%

“Not great quality for carrying items as it is more or less felt”

Strap/String Quality4%

“The other thing is the adjustable straps, seem a little too long, even for me”

Durability3%

“Literally fell apart at the seams the first time my son wore it”

Zipper Quality3%

“was the perfect size unfortunately the zipper broke 3 months after buying it”

Value For Money2%

“the price is a little high for a novelty backpack with limited general-purpose use”

Top return reasons

Size-Overall58%

Material Quality6%

Advertised Vs Actual Product5%

Zipper Quality3%

Length3%

Product Condition3%

Color2%

Stitch/Finish/Polish2%

Strap/String Quality2%

Shape/Style2%

Common finn the human costume questions

Is finn the human costume profitable to sell on Amazon United States?: The niche generates $28K/yr across 17 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +18.3%. Flapen's verdict: Skip it (38/100).
How competitive is the finn the human costume niche?: 14 brands and 20 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 73% of demand.
What do buyers complain about in finn the human costume?: Top complaints mined from reviews: Size-Overall, Quality-Overall, Hard Feel. The return rate is 4.1%.
When does demand for finn the human costume peak?: Demand peaks in Sep–Oct–Nov; the busiest month runs 60.2× the quietest.
What does it cost to enter the finn the human costume niche?: Listings span $8.25–$30.48; the average listing price is $19.13 (sweet spot $15–$100). The average incumbent carries 1,184 reviews — the moat a new listing must climb.