stay puft marshmallow man costume
Skip itA small market ($8K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$40.00avg listing price — sweet spot $15–$100
Price range
Incredible$15.03–$96.18cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great115.36avg incumbent reviews — the moat a new listing must climb
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Growth
Good+42.6%90-day search growth — must beat 0% to launch
Competition
Good53%top-5 click share — leaders hold, buyers still browse
Brand share
Good74%top-5 brand share — brands hold most of the demand
Conversion
Bad0.3%search→purchase rate — share of searches ending in a sale
Returns
Bad10.8%return rate — above 5% kills the launch gate
Market size
Bad$8K$8K/yr · 59K searches
According to Flapen's Amazon United States niche tracking, stay puft marshmallow man costume is a $8K/yr Amazon United States market (59K searches/yr). The top 5 brands hold 74% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 46/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
stay puft marshmallow man costume market data
- Units sold / yr
- 750–1K
- avg 0–100/product
- Revenue / yr
- $30K–$40K
- units × avg price
- Conversion rate
- 0.3%
- Avg BSR
- #151,446
- Page quality
- 0%
- Prime
- 43%
- Sponsored
- 71%
- Out of stock
- 3.0%
- Avg brand age
- 52 months
- Avg seller age
- 192 days
Competition & brand share
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.Brands
12 rising
Sellers
41
Top-5 brand share
74%
Top 20: 100%
Top-5 click share
53%
Top 20: 92%
Open market
18%
- Mad Engine26%
- Disguise16%
- Fun Costumes14%
- Rubies9%
- Ripple Junction8%
- Funny Threads Outlet8%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +42.6% search growth over the last 90 days.Peak months: Sep, Oct · busiest ÷ quietest = 121.2×
Top stay puft marshmallow man costume search terms
- stay puft marshmallow man costume28K/yr
- marshmallow man costume8K/yr
- stay puff marshmallow man costume9K/yr
- stay puft costume14K/yr
Top stay puft marshmallow man 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Mad Engine Stay Puft Marshmallow Man Costume Adult Ghostbusters Hooded Union Suit Pajama For Men Women (Stay Puft Small/Medium)
Mad Engine$46.864.3★66 rev
Disguise Inflatable Stay Puft Marshmallow Man Costume Official Ghostbusters Afterlife Movie Fan Operated Blow Up Suit One Adult Size (up to 42-46)
Disguise$80.104.5★273 rev
Rubies at Party City Ghostbusters: Stay-Puft Marshmallow Man Costume for Adults Unisex No Size
Rubies$67.724.5★1,466 rev
Ghostbusters Stay Puft Marshmallow Man Costume for Adults - Unisex Soft Hooded Union Suit Onesie Pajama Jumpsuit S/M
Fun Costumes$47.943.7★23 rev
Stay Puft Marshmallows Funny Old School Ghost Fighting Marshmallow Man 80s 90s Movie Humor Mens Shirt Small Royal
Funny Threads Outlet$27.874.6★85 rev
Newest
by launch date
Fun Costumes Adult Ghostbusters Stay Puft Marshmallow Man Inflatable Costume | Mens Inflatable Outfit with Headpiece Gloves Standard
Fun Costumes$43.608 rev
Halloween Costume Set with Brown Textured Vest Green Character Ears Headband Nose Piece Adult Size (Brown Green 2XL)
SUPWISER$20.8424 rev
Tellingyou 3 Pcs Halloween Giant Colossal Sailor Candy Specter Monster Costume Accessories Sailor Uniform Set Hat Gloves Collar with Tie for Adults Cosplay Party
Tellingyou$26.4116 rev
Mad Engine Ghostbusters Jumpsuit Union Suit Adult Costume One Piece Cosplay Pajama Sleepwear (L/XL)
Mad Engine$41.0214 rev
Mad Engine Stay Puft Marshmallow Man Costume Adult Ghostbusters Hooded Union Suit Pajama For Men Women (Stay Puft Small/Medium)
Mad Engine$46.8666 rev
Trending
90-day click momentum
Costume Agent Macho Man T-Shirt Bandana and Sunglasses Complete Costume Set (Adult Small) Purple
Costume Agent$33.724.5★
Stay Puft Marshmallows Funny Old School Ghost Fighting Marshmallow Man 80s 90s Movie Humor Mens Shirt Large Royal
Funny Threads Outlet$27.774.6★
Halloween Costume Set with Brown Textured Vest Green Character Ears Headband Nose Piece Adult Size (Brown Green 2XL)
SUPWISER$20.843.9★
Stay Puft Marshmallows Funny Old School Ghost Fighting Marshmallow Man 80s 90s Movie Humor Mens Shirt Small Royal
Funny Threads Outlet$27.874.6★
Ripple Junction Ghostbusters Mens Short Sleeve T-Shirt Stay Puft Marshmallow Man Comedy Movie Costume White XL
Ripple Junction$15.034.4★
What buyers say about stay puft marshmallow man costume
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality”
“the fit is perfect”
“comfortable”
“As described”
“worth the price”
“we have had no issues with the zipper”
What buyers complain about
“large in crotch”
“because I personally feel like the costume is a bit overpriced”
Top return reasons
Common questions
- Is stay puft marshmallow man costume profitable to sell on Amazon United States?
- The niche generates $8K/yr across 28 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is +42.6%. Flapen's verdict: Skip it (46/100).
- How competitive is the stay puft marshmallow man costume niche?
- 12 brands and 41 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 74% of demand.
- What do buyers complain about in stay puft marshmallow man costume?
- Top complaints mined from reviews: Size-Overall, Value For Money. The return rate is 10.8% — above our launch gate.
- When does demand for stay puft marshmallow man costume peak?
- Demand peaks in Sep–Oct; the busiest month runs 121.2× the quietest.
- What does it cost to enter the stay puft marshmallow man costume niche?
- Listings span $15.03–$96.18; the average listing price is $40.00 (sweet spot $15–$100). The average incumbent carries 115 reviews — the moat a new listing must climb.