sherlock holmes costume
Skip itSoft demand (-38.2% this quarter) — this niche doesn't clear our bar today.
Review moat
Incredible73.14avg incumbent reviews — the moat a new listing must climb
Avg price
Incredible$31.10avg listing price — sweet spot $15–$100
Price range
Incredible$16.80–$54.12cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Conversion
Okay2.9%search→purchase rate — share of searches ending in a sale
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Competition
Bad78%top-5 click share — a locked-up shelf
Market size
Bad$66K$66K/yr · 72K searches
Returns
Bad7.6%return rate — above 5% kills the launch gate
Growth
Bad-38.2%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, sherlock holmes costume is a $66K/yr Amazon United States market (72K searches/yr). The top 5 brands hold 83% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Skip it — 36/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
sherlock holmes costume market data
- Units sold / yr
- 2K–2K
- avg 0–100/product
- Revenue / yr
- $47K–$62K
- units × avg price
- Conversion rate
- 2.9%
- Avg BSR
- #2,670
- Page quality
- 0%
- Prime
- 86%
- Sponsored
- 71%
- Out of stock
- 9.5%
- Avg brand age
- 50 months
- Avg seller age
- 200 days
Competition & brand share
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.Brands
10 falling
Sellers
12
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
78%
Top 20: 100%
Open market
12%
- Fun Costumes31%
- Colorful House30%
- fun shack10%
- wevgbv8%
- GVVJYXD6%
- AGCOAH5%
- Open — no brand owns it (4 brands, 12%)
Demand & seasonality
Weekly Amazon search volume, last 90 weeks — -38.2% search growth over the last 90 days.Peak months: Sep, Oct, Nov · busiest ÷ quietest = 15.1×
Top sherlock holmes costume search terms
- sherlock holmes costume61K/yr
- sherlock holmes costume adult7K/yr
- sherlock holmes coat4K/yr
Top sherlock holmes 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.
All 14 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Colorful House Cloak Medieval Detective Cosplay Costume Short Cape for Adult Men and Women Role Play(Khaki 25.59)
Colorful House$29.530.0★0 rev
Adults Sherlock Holmes Hat & Poncho Costume Kit Classic Detective Outfit Standard
Fun Costumes$31.164.8★8 rev
wevgbv Detective Costume 11pc Accessories Set Detective Hat Dress up Costume for Adults Men Women Halloween Spy Costumes
wevgbv$20.944.6★59 rev
fun shack Mens Detective Costume Adult Detective Costume Men Detectives Halloween Costume Private Investigator Costume Medium
fun shack$53.373.8★295 rev
GVVJYXD Detective Costume Accessories Set Outfit Accessories For Adults Women Men with Detective Hat for Dress Up
GVVJYXD$16.803.0★6 rev
Newest
by launch date
RUEGGVAT 14 PCS Adult Detective Costume Accessories Set Classic Sleuth Spy Kit with Deerstalker Hat Magnifying Glass Bow Tie Pocket Watch Mustache & Gloves for Halloween Cosplay Mystery Party
RUEGGVAT$18.922 rev
Univafeli Adults Detective Costume Mens Womens Victorian Outfit Inverness Cape Deerstalker Hat for Halloween Cosplay Button L
Univafeli$29.180 rev
Adults Detective Costume Mens Womens Victorian Outfit Inverness Cape Deerstalker Hat for Halloween Cosplay Lace L
Univafeli$28.760 rev
wevgbv Detective Costume 11pc Accessories Set Detective Hat Dress up Costume for Adults Men Women Halloween Spy Costumes
wevgbv$20.9459 rev
ERDOGLY Detective Costume Accessories Set Detective Outfit Accessories for Adults Men Women with Detective Hat Magnifying Glass Black Bow Tie for Halloween Dress Up Brown
ERDOGLY$19.5619 rev
Trending
90-day click momentumAdults Detective Costume Mens Womens Victorian Outfit Inverness Cape Deerstalker Hat for Halloween Cosplay Lace L
Univafeli$28.760.0★
Univafeli Adults Detective Costume Mens Womens Victorian Outfit Inverness Cape Deerstalker Hat for Halloween Cosplay Button L
Univafeli$29.180.0★
RUEGGVAT 14 PCS Adult Detective Costume Accessories Set Classic Sleuth Spy Kit with Deerstalker Hat Magnifying Glass Bow Tie Pocket Watch Mustache & Gloves for Halloween Cosplay Mystery Party
RUEGGVAT$18.925.0★
Colorful House Cloak Medieval Detective Cosplay Costume Short Cape for Adult Men and Women Role Play(Khaki 25.59)
Colorful House$29.530.0★
Adults Sherlock Holmes Hat & Poncho Costume Kit Classic Detective Outfit Standard
Fun Costumes$31.164.8★
What buyers say about sherlock holmes costume
What buyers praise and complain about, mined from review topics.What buyers love
“everything else was very good quality for cosplay”
“Got the job done”
“fits well”
“Good gag gift”
“Great price”
“The pipe is as expected, great color, realistic,”
“heavy not cheap looking”
What buyers complain about
“A bit over priced”
“Beard sticker was hard to remove”
“Few issues with sharp edges”
Top return reasons
Common questions
- Is sherlock holmes costume profitable to sell on Amazon United States?
- The niche generates $66K/yr across 14 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -38.2%. Flapen's verdict: Skip it (36/100).
- How competitive is the sherlock holmes costume niche?
- 10 brands and 12 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 83% of demand.
- What do buyers complain about in sherlock holmes costume?
- Top complaints mined from reviews: Value For Money, Ease Of Use, Sharpness. The return rate is 7.6% — above our launch gate.
- When does demand for sherlock holmes costume peak?
- Demand peaks in Sep–Oct–Nov; the busiest month runs 15.1× the quietest.
- What does it cost to enter the sherlock holmes costume niche?
- Listings span $16.80–$54.12; the average listing price is $31.10 (sweet spot $15–$100). The average incumbent carries 73 reviews — the moat a new listing must climb.