firefly serenity
Skip itSoft demand (-53.3% this quarter) — this niche doesn't clear our bar today.
Review moat
Incredible81.58avg incumbent reviews — the moat a new listing must climb
Avg price
Great$22.36avg listing price — sweet spot $15–$100
Returns
Great1.1%return rate — above 5% kills the launch gate
Price range
Great$4.93–$87.48cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good45%top-5 click share — leaders hold, buyers still browse
Conversion
Good4.9%search→purchase rate — share of searches ending in a sale
Brand share
Okay84%top-5 brand share — brands hold most of the demand
Market size
Bad$78K$78K/yr · 72K searches
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Growth
Bad-53.3%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, firefly serenity is a $78K/yr Amazon United States market (72K searches/yr). The top 5 brands hold 84% of demand. Verdict: Skip it — 47/100.
Data updated Jul 30, 2026 · scored weekly · How we score niches
firefly serenity market data
- Units sold / yr
- 3K–4K
- avg 100–250/product
- Revenue / yr
- $67K–$89K
- units × avg price
- Conversion rate
- 4.9%
- Avg BSR
- #26,547
- Page quality
- 0%
- Prime
- 79%
- Sponsored
- 64%
- Out of stock
- 4.4%
- Avg brand age
- 52 months
- Avg seller age
- 164 days
Competition & brand share
The top 5 products take 45% of clicks — established leaders, but buyers still shop beyond them.Brands
19 rising
Sellers
72
Top-5 brand share
84%
Top 20: 100%
Top-5 click share
45%
Top 20: 90%
Open market
14%
- Funko59%
- Xiahuyu11%
- ATRtoyMF7%
- EvolveFISH4%
- WHD3%
- Upper Deck2%
- Open — no brand owns it (13 brands, 14%)
Demand
Weekly Amazon search volume, last 34 weeks — -53.3% search growth over the last 90 days.Top firefly serenity search terms
- firefly serenity17K/yr
- firefly merchandise12K/yr
- firefly funko pop18K/yr
- firefly tv show merchandise11K/yr
- funko pop firefly6K/yr
- firefly funko4K/yr
- funko firefly3K/yr
Top firefly serenity 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
Xiahuyu Inspirational Keychain Gifts No Power in The Verse Can Stop Me Keychain Serenity Keychain Firefly Inspired Gift Firefly Fans Gift for Women Men
Xiahuyu$8.774.6★19 rev
Funko Pop! TV: Firefly - Malcolm Reynolds - Collectable Vinyl Figure - Gift Idea - Official Merchandise - Toys for Kids & Adults - TV Fans - Model Figure for Collectors and Display
Funko$13.484.9★76 rev
Funko POP! TV: Firefly - Hoban Washburne
Funko$15.244.8★80 rev
Funko Pop! TV: Firefly - Kaylee Frye - Collectable Vinyl Figure - Gift Idea - Official Merchandise - Toys for Kids & Adults - TV Fans - Model Figure for Collectors and Display
Funko$14.315.0★71 rev
Funko POP! TV: Firefly - River Tam
Funko$15.895.0★42 rev
Newest
by launch date
Firefly Quotes Essential 5 Removable Magnetic Bumper Sticker | Heavy-Duty Vehicle Magnet
Leyland Designs$5.911 rev
Funko Firefly Simon Tam Exclusive Pop Vinyl Figure 1829
Funko$34.230 rev
Funko Firefly Jayne Cobb Exclusive Pop Vinyl Figure 1828
Funko$33.091 rev
Funko Pop! TV: Firefly - Malcolm Reynolds - Collectable Vinyl Figure - Gift Idea - Official Merchandise - Toys for Kids & Adults - TV Fans - Model Figure for Collectors and Display
Funko$13.4876 rev
Funko POP! TV: Firefly - Hoban Washburne
Funko$15.2480 rev
Trending
90-day click momentumFirefly Quotes Essential 5 Removable Magnetic Bumper Sticker | Heavy-Duty Vehicle Magnet
Leyland Designs$5.915.0★
Serenity Firefly Logo Embroidered Adult Cool & Dry Sport Cap Hat (as1 Alpha s m Navy)
EvolveFISH$26.475.0★
Funko Firefly Simon Tam Exclusive Pop Vinyl Figure 1829
Funko$34.230.0★
Blue Sun Firefly Evil Empire Corporation - Mens Cotton T-Shirt XL Sport
The Goozler$16.904.6★
Funko Firefly Jayne Cobb Exclusive Pop Vinyl Figure 1828
Funko$33.095.0★
What buyers say about firefly serenity
What buyers praise and complain about, mined from review topics.What buyers love
“Great design and price point,”
“Fits great”
“A collectable for a gift”
“A good gift idea”
“All shiny”
“Really a nice kit”
“instructions were mostly clear”
“apparently very comfy”
“Great value”
“Even though Firefly has been gone for over 23 years it still remains mighty”
What buyers complain about
“Some didn't fit well”
“Geeks don't mind the poor graphic”
“The instructions have a few tricky spots that require some very critical attention to detail”
“Wont stay upright”
“Will fall apart easily”
“then make one that's insanely expensive”
“One last minor issue was that two of the stickers spanned two bricks”
“I wish it came in brown”
“Really can't say I care for the marketing tactics”
“Poor quality do not buy it”
Top return reasons
Common questions
- Is firefly serenity profitable to sell on Amazon United States?
- The niche generates $78K/yr across 33 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -53.3%. Flapen's verdict: Skip it (47/100).
- How competitive is the firefly serenity niche?
- 19 brands and 72 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 84% of demand.
- What do buyers complain about in firefly serenity?
- Top complaints mined from reviews: Size-Overall, Print Quality, Assembly/Installation. The return rate is 1.1%.
- What does it cost to enter the firefly serenity niche?
- Listings span $4.93–$87.48; the average listing price is $22.36 (sweet spot $15–$100). The average incumbent carries 82 reviews — the moat a new listing must climb.