sonic birthday shirt
Skip itBrand-locked demand (top 5 brands take 96% of clicks) — this niche doesn't clear our bar today.
Competition
Incredible19%top-5 click share — an open shelf
Avg price
Great$19.26avg listing price — sweet spot $15–$100
Price range
Great$8.52–$43.02cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good558.41avg incumbent reviews — the moat a new listing must climb
Returns
Good2.2%return rate — above 5% kills the launch gate
Market size
Okay$138K$138K/yr · 549K searches
Growth
Bad-2.6%90-day search growth — must beat 0% to launch
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Conversion
Bad1.3%search→purchase rate — share of searches ending in a sale
Brand share
Bad96%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, sonic birthday shirt is a $138K/yr Amazon United States market (549K searches/yr). The top 5 brands hold 96% of demand. Demand peaks in Jun–Jul. Verdict: Skip it — 46/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
sonic birthday shirt market data
- Units sold / yr
- 8K–10K
- avg 0–100/product
- Revenue / yr
- $154K–$193K
- units × avg price
- Conversion rate
- 1.3%
- Avg BSR
- #1,653
- Page quality
- 0%
- Prime
- 98%
- Sponsored
- 86%
- Out of stock
- 4.7%
- Avg brand age
- 32 months
- Avg seller age
- 154 days
Competition & brand share
Clicks spread well past the top 5 (19% combined) — an open shelf where new products get seen.Brands
8 falling
Sellers
16
Top-5 brand share
96%
Top 20: 100%
Top-5 click share
19%
Top 20: 41%
Open market
2%
- SEGA78%
- Sonic The Hedgehog9%
- Bioworld4%
- Zypynith3%
- Komar Kids2%
- Tutu and Sian2%
- Open — no brand owns it (2 brands, 2%)
Demand & seasonality
Weekly Amazon search volume, last 74 weeks — -2.6% search growth over the last 90 days.Peak months: Jun, Jul · busiest ÷ quietest = 4.6×
Top sonic birthday shirt search terms
- sonic shirt109K/yr
- sonic birthday shirt67K/yr
- sonic clothes53K/yr
- sonic shirts for boys46K/yr
- sonic the hedgehog shirt31K/yr
- sonic outfit for boys21K/yr
- sonic shirts24K/yr
- sonic clothes for boys31K/yr
- sonic outfit21K/yr
- sonic t shirt18K/yr
Top sonic birthday shirt 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
SEGA boys Sonic the Hedgehog 3-pack T-shirt Bundle Sonic Tails Knuckles T Shirt Gold/Red/Royal Blue 8 10 US
SEGA$20.724.8★1,733 rev
SEGA boys Sonic the Hedgehog 3-pack Tee Bundle Sonic Tails Knuckle T Shirt Red Heather Grey Royal 5 6 US
SEGA$20.574.8★823 rev
SEGA Sonic the Hedgehog Little Boys 2-Piece Short Sleeve Graphic Pullover Hooded Tee and Mesh Shorts Outfit Sonic Blue 7-8
SEGA$25.594.7★486 rev
SEGA Sonic The Hedgehog Boys Short Sleeve T-Shirt for Big Kids Beige
SEGA$15.924.7★216 rev
SEGA Sonic The Hedgehog Boys Short Sleeve T-Shirt for Big Kids Beige
SEGA$15.674.7★216 rev
Newest
by launch date
SEGA Sonic the Hedgehog Boys Short Sleeve T-Shirt and Mesh Short Set for Big Kids
SEGA$15.287 rev
SEGA Sonic the Hedgehog Boys Short Sleeve T-Shirt and Mesh Short Set for Toddler and Big Kids
SEGA$19.325 rev
SEGA Sonic the Hedgehog Boys Short Sleeve T-Shirt and Mesh Short Set for Big Kids
SEGA$16.5315 rev
SEGA Sonic the Hedgehog Boys Short Sleeve T-Shirt and Mesh Short Set for Big Kids
SEGA$16.7915 rev
SEGA Sonic the Hedgehog Boys Short Sleeve T-Shirt and Mesh Short Set for Big Kids
SEGA$19.4923 rev
Trending
90-day click momentumSEGA Sonic the Hedgehog Boys Short Sleeve T-Shirt and Mesh Short Set for Big Kids
SEGA$15.284.6★
SEGA Sonic the Hedgehog Boys Short Sleeve T-Shirt and Mesh Short Set for Toddler and Big Kids
SEGA$19.323.6★
SEGA Sonic the Hedgehog Boys Short Sleeve T-Shirt and Mesh Short Set for Big Kids
SEGA$19.354.8★
SEGA Sonic the Hedgehog Boys Short Sleeve T-Shirt and Mesh Short Set for Big Kids
SEGA$19.494.8★
SEGA Sonic the Hedgehog Boys Short Sleeve T-Shirt and Mesh Short Set for Big Kids
SEGA$16.534.4★
What buyers say about sonic birthday shirt
What buyers praise and complain about, mined from review topics.What buyers love
“Fit like it should”
“Excellent product”
“As advertised”
“Worth the buy”
“Gift”
“100% cotton Sonic the Hedgehog t-shirt - perfect for Sonic lovers”
“Vibrant colors”
“Comfortable”
“very durable”
“It was easy to use”
What buyers complain about
“Poor fit”
“Not well made”
“However, it has a chemical smell”
“Good shirt, print quality issues”
“the shirt faded after the first wash”
“Can't get it working after chaging”
“I don't know if its due to the quality of the shirt or the material they used for the vinyl”
“with very loose elastic”
“Its not the same as what on site”
“have a very big neck looks like already used someone before I brought it”
Top return reasons
Common questions
- Is sonic birthday shirt profitable to sell on Amazon United States?
- The niche generates $138K/yr across 123 tracked products. 1 of 46 products launched in the last 360 days are still selling. 90-day search growth is -2.6%. Flapen's verdict: Skip it (46/100).
- How competitive is the sonic birthday shirt niche?
- 8 brands and 16 sellers compete. The top 5 products take 19% of clicks and top 5 brands hold 96% of demand.
- What do buyers complain about in sonic birthday shirt?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Smell. The return rate is 2.2%.
- When does demand for sonic birthday shirt peak?
- Demand peaks in Jun–Jul; the busiest month runs 4.6× the quietest.
- What does it cost to enter the sonic birthday shirt niche?
- Listings span $8.52–$43.02; the average listing price is $19.26 (sweet spot $15–$100). The average incumbent carries 558 reviews — the moat a new listing must climb.