Is sonic birthday party supplies profitable to sell on Amazon United States?

The niche generates $1.5M/yr across 32 tracked products. 6 of 7 products launched in the last 360 days are still selling. 90-day search growth is -5.3%. Flapen's verdict: Worth a look (58/100).

How competitive is the sonic birthday party supplies niche?

20 brands and 48 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 71% of demand.

What do buyers complain about in sonic birthday party supplies?

Top complaints mined from reviews: Quality-Overall, Size-Overall, Durability. The return rate is 1.8%.

When does demand for sonic birthday party supplies peak?

Demand peaks in Jan–Mar; the busiest month runs 2.3× the quietest.

What does it cost to enter the sonic birthday party supplies niche?

Listings span $4.88–$39.54; the average listing price is $16.67 (sweet spot $15–$100). The average incumbent carries 814 reviews — the moat a new listing must climb.

sonic birthday party supplies

Worth a look

Shows a $1.5M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size

Great$1.5M

$1.5M/yr · 2.3M searches

Returns

Great1.8%

return rate — above 5% kills the launch gate

Avg price

Great$16.67

avg listing price — sweet spot $15–$100

Price range

Good$4.88–$39.54

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

Competition

Good45%

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

Review moat

Good813.56

avg incumbent reviews — the moat a new listing must climb

Brand share

Good71%

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

Conversion

Okay3.9%

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

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-5.3%

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

According to Flapen's Amazon United States niche tracking, sonic birthday party supplies is a $1.5M/yr Amazon United States market (2.3M searches/yr). The top 5 brands hold 71% of demand. Demand peaks in Jan–Mar. Verdict: Worth a look — 58/100.

Data updated Jul 23, 2026 · scored weekly · How we score niches

sonic birthday party supplies market data

Units sold / yr: 80K–100K; avg 2,000–2,500/product
Revenue / yr: $1.3M–$1.7M; units × avg price
Conversion rate: 3.9%
Avg BSR: #844
Page quality: 0%
Prime: 100%
Sponsored: 78%
Out of stock: 7.1%
Avg brand age: 29 months
Avg seller age: 144 days

Competition & brand share

The top 5 products take 45% of clicks — established leaders, but buyers still shop beyond them.

Brands

20 falling

Sellers

Top-5 brand share

71%

Top 20: 100%

Top-5 click share

45%

Top 20: 85%

Open market

25%

Unique30%
Mighty Mojo16%
Sonic The Hedgehog12%
Betty Crocker6%
DecoPac6%
Amscan5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -5.3% search growth over the last 90 days.

Peak months: Jan, Mar · busiest ÷ quietest = 2.3×

Open Trend

Top sonic birthday party supplies search terms

sonic birthday party decorations879K/yr -3.5%2.4% conv.
sonic party favors318K/yr -19.4%2.6% conv.
sonic birthday decorations154K/yr +16.0%2.3% conv.
sonic party decorations176K/yr +5.1%2.4% conv.
sonic birthday95K/yr -5.3%1.7% conv.
sonic backdrop90K/yr +4.6%0.7% conv.
sonic goodie bags81K/yr -7.0%2.8% conv.
sonic the hedgehog birthday decorations53K/yr +11.3%1.9% conv.
sonic decorations for birthday66K/yr -1.4%2.1% conv.
sonic birthday party favors60K/yr -15.0%2.4% conv.

All search terms

Top sonic birthday party supplies 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Sonic The Hedgehog Birthday Party Kit - Complete Supplies for 10 Video Game Themed Decorations Licensed Banner Plates Cups Balloons Games and Favors for Kids Celebration

Mighty Mojo$39.544.8★1,173 rev

Sonic Birthday Party Decorations for 16 | Banner Tablecloth Plates and Napkins Masks Sticker | Sonic Party Decorations | Officially Licensed

Unique$25.234.8★900 rev

Sonic The Hedgehog Fruit Flavored Snacks Treat Pouches Gluten Free Snack Value Pack 22 Ct 17.6 oz

Betty Crocker$4.884.8★2,480 rev

Sonic Birthday Party Decorations | Serves 16 Guests | Balloons Masks Banner Tablecloth Plates Napkins Candles Sticker | Officially Licensed

Unique$29.254.8★112 rev

Sonic Birthday Party Decorations for 16 | Banner Tablecloth Sonic Plates and Napkins Sticker | Sonic Party Decorations | Officially Licensed

Unique$21.944.8★238 rev

Newest

by launch date

72 Pcs Hedgehog Birthday Party Favors with Bubble Wands Gift Bags

Generic$18.696 rev

3mo ago

Sonic Table Cloth and Sonic Birthday Banner | Birthday Party Decorations and Supplies | Officially Licensed

Unique$9.9661 rev

4mo ago

Sonic Birthday Party Decorations | Serves 16 Guests | Masks Tattoos Banner Tablecloth Plates Napkins Sticker | Officially Licensed

Unique$26.9449 rev

7mo ago

Sonic the Hedgehog Cake Candles | 6 Birthday Cake Candles Featuring Sonic Knuckles & Tails for Sonic Party

DecoPac$9.23131 rev

11mo ago

Sonic Birthday Party Decorations | Serves 16 Guests | Balloons Masks Banner Tablecloth Plates Napkins Candles Sticker | Officially Licensed

Unique$29.25112 rev

1y ago

What buyers say about sonic birthday party supplies

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

What buyers love

Quality-Overall22%

“Very strong bags and good quality”

Color14%

“The colors were amazing”

Advertised Vs Actual Product11%

“As described”

Value For Money8%

“Good value”

Design-Overall5%

“the character designs are crisp”

Taste-Overall5%

“Taste great”

Assembly/Installation4%

“Easy to set up”

Ease Of Use4%

“Easy to use”

Size-Overall4%

“Good size”

Durability4%

“Seems durable to last a party”

What buyers complain about

Quality-Overall20%

“The table cloth was missing a corner, poor quality”

Size-Overall12%

“A bit small”

Durability11%

“It breaks very easily”

Inflation/Deflation7%

“The spiked balloons deflated within 30 minutes of blowing them”

Advertised Vs Actual Product5%

“5) the images are very misleading”

Strength5%

“Very fragile and easily falls apart”

Adhesion/Stickiness4%

“the tape kept falling off”

Thickness4%

“Not as dense as I wanted them to be”

Value For Money3%

“Cheap, not worth the money”

Instructions/User Manual/Troubleshooting3%

“I should have read the instruction a little better”

Top return reasons

Size-Overall25%

Value For Money24%

Color11%

Advertised Vs Actual Product8%

Quality-Overall6%

Defective Material/Parts5%

Adhesion/Stickiness3%

Inflation/Deflation2%

Material Quality2%

Functionality-Overall2%

Common questions

Is sonic birthday party supplies profitable to sell on Amazon United States?: The niche generates $1.5M/yr across 32 tracked products. 6 of 7 products launched in the last 360 days are still selling. 90-day search growth is -5.3%. Flapen's verdict: Worth a look (58/100).
How competitive is the sonic birthday party supplies niche?: 20 brands and 48 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 71% of demand.
What do buyers complain about in sonic birthday party supplies?: Top complaints mined from reviews: Quality-Overall, Size-Overall, Durability. The return rate is 1.8%.
When does demand for sonic birthday party supplies peak?: Demand peaks in Jan–Mar; the busiest month runs 2.3× the quietest.
What does it cost to enter the sonic birthday party supplies niche?: Listings span $4.88–$39.54; the average listing price is $16.67 (sweet spot $15–$100). The average incumbent carries 814 reviews — the moat a new listing must climb.