Is the big one birthday decorations profitable to sell on Amazon United States?

The niche generates $88K/yr across 44 tracked products. 2 of 11 products launched in the last 360 days are still selling. 90-day search growth is +66.1%. Flapen's verdict: Worth a look (61/100).

How competitive is the the big one birthday decorations niche?

38 brands and 41 sellers compete. The top 5 products take 32% of clicks and top 5 brands hold 40% of demand.

What do buyers complain about in the big one birthday decorations?

Top complaints mined from reviews: Size-Overall, Quality-Overall, Advertised Vs Actual Product. The return rate is 2.5%.

When does demand for the big one birthday decorations peak?

Demand peaks in May–Jun–Jul–Aug; the busiest month runs 3.8× the quietest.

What does it cost to enter the the big one birthday decorations niche?

Listings span $5.96–$35.19; the average listing price is $18.80 (sweet spot $15–$100). The average incumbent carries 154 reviews — the moat a new listing must climb.

the big one birthday decorations

Worth a look

Shows no brand lock-in (top 5 brands take 40% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Brand share

Incredible40%

top-5 brand share — no brand owns this niche

Review moat

Great153.52

avg incumbent reviews — the moat a new listing must climb

Avg price

Great$18.80

avg listing price — sweet spot $15–$100

Competition

Great32%

top-5 click share — an open shelf

Growth

Great+66.1%

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

Price range

Good$5.96–$35.19

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

Returns

Good2.5%

return rate — above 5% kills the launch gate

Conversion

Okay3.2%

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

Market size

Bad$88K

$88K/yr · 144K searches

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Signals No Dominant Brand Low Review Barrier

According to Flapen's Amazon United States niche tracking, the big one birthday decorations is a $88K/yr Amazon United States market (144K searches/yr). The top 5 brands hold 40% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 61/100.

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

the big one birthday decorations market data

Units sold / yr: 3K–4K; avg 0–100/product
Revenue / yr: $56K–$75K; units × avg price
Conversion rate: 3.2%
Avg BSR: #3,407
Page quality: 0%
Prime: 100%
Sponsored: 98%
Out of stock: 8.9%
Avg brand age: 31 months
Avg seller age: 190 days

Competition & brand share

Clicks spread well past the top 5 (32% combined) — an open shelf where new products get seen.

Brands

38 falling

Sellers

Top-5 brand share

40%

Top 20: 84%

Top-5 click share

32%

Top 20: 76%

Open market

55%

Gupesxu10%
Naozinebi9%
HIPVVILD9%
Party Inspo7%
Kudapity5%
Novabright5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +66.1% search growth over the last 90 days.

Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 3.8×

Open Trend

Top the big one birthday decorations search terms

the big one party decorations74K/yr +53.4%1.7% conv.
the big one birthday decorations27K/yr +98.6%1.5% conv.
the big one27K/yr +31.7%0.2% conv.
the big one birthday8K/yr +144.8%0.9% conv.
big one birthday decorations8K/yr +90.1%1.4% conv.

All search terms

Top the big one birthday decorations 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

264Pcs The Big One First Birthday Decorations Surf 1st Birthday Party Supplies with Photo Banner Backdrop Plates Napkins Tablecloth Balloon Box Cake Toppers for Boys Summer Beach Pool Party

Gupesxu$31.954.6★46 rev

Party Inspo The Big One Surfing Birthday Decorations Boy - 131Pcs Surf 1st Birthday Party Supplies Kit - Summer Beach Ocean Theme Decor for First Bday

Party Inspo$29.935.0★4 rev

Summer Beach Surf First Birthday Decorations The Big One 1st Birthday Party Supplies Hawaii Surfing First Party Supplies for 1st Boy The Big One Decorations for One Year Old Boy

Kudapity$29.914.5★31 rev

Novabright 24 Pcs The Big One Party Favors Boxes Goodie Bags 7.6x6.3inch Surf Summer Beach Party Bags Centerpiece for First/1st Birthday Decorations Blue Boho Baby Shower Supplies

Novabright$24.024.5★14 rev

The Big One Photo Board Surf Birthday Party Decorations Wooden Board 12 Monthly Milestone Picture Frame One Year Old 1st Birthday Banner for Baby Keepsake Gift Summer Beach Supplies (Fit 2x2.8in Pic)

Naozinebi$15.364.5★323 rev

Newest

by launch date

Party Inspo The Big One Surfing Birthday Decorations Boy - 131Pcs Surf 1st Birthday Party Supplies Kit - Summer Beach Ocean Theme Decor for First Bday

Party Inspo$29.934 rev

4mo ago

106pcs The Big One Party Decorations: 1st Birthday Decorations for Boy with Photo Banner Garland High Chair Banner Backdrop Tablecloth Balloons Crown Balloon Boxes Cake Topper Posters

Yavxzvbw$22.233 rev

4mo ago

Boao 7.2FT 6FT The Big One Arch Backdrop Cover for Surfs Up 1st Birthday Decoration Ride the Wave Boy Beach Themed Baby First Birthday Party Spandex Arch Covers Stretchy Backdrop for Party Decoration

Boao$35.1918 rev

5mo ago

The Big One Party Decorations: The Big One Birthday Decorations with Banner Surf Board Garland Swirls Centerpieces Balloon Pom Poms for Surf 1st Birthday Summer Beach Party Supplies

Yavxzvbw$9.913 rev

5mo ago

Novabright 24 Pcs The Big One Party Favors Boxes Goodie Bags 7.6x6.3inch Surf Summer Beach Party Bags Centerpiece for First/1st Birthday Decorations Blue Boho Baby Shower Supplies

Novabright$24.0214 rev

8mo ago

What buyers say about the big one birthday decorations

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

What buyers love

Quality-Overall21%

“It is well made”

Value For Money18%

“Worth it”

Fun/Entertainment Experience10%

“FUN”

Size-Overall10%

“perfect size”

Color10%

“the colors were very vibrant”

Durability6%

“Quality and Durability”

Assembly/Installation5%

“Beautiful and Easy to Set Up”

Advertised Vs Actual Product3%

“As expected”

Gifting Purpose2%

“Adorable gifts”

Strength2%

“Very strong”

What buyers complain about

Size-Overall41%

“The size is not accurate”

Quality-Overall10%

“Not the quality I was expecting”

Advertised Vs Actual Product6%

“Colors were different than the picture”

Strength4%

“slightly flimsy”

Assembly/Installation4%

“broke when trying to put them back together Im so upset this is my last babys first birthday party”

Defective Material/Parts3%

“the valve was malfunctioning”

Value For Money3%

“Good was pricey”

Inflation/Deflation3%

“Over half the balls had holes in them and not inflatable”

Durability3%

“Can break easily”

Product Condition1%

“Came in used”

Top return reasons

Size-Overall53%

Value For Money12%

Color7%

Advertised Vs Actual Product5%

Inflation/Deflation4%

Leak-Proof3%

Quality-Overall3%

Functionality-Overall2%