Is 29th birthday decorations for women profitable to sell on Amazon United States?

The niche generates $148K/yr across 65 tracked products. 1 of 22 products launched in the last 360 days are still selling. 90-day search growth is +0.6%. Flapen's verdict: Worth a look (52/100).

How competitive is the 29th birthday decorations for women niche?

50 brands and 53 sellers compete. The top 5 products take 29% of clicks and top 5 brands hold 35% of demand.

What do buyers complain about in 29th birthday decorations for women?

Top complaints mined from reviews: Quality-Overall, Inflation/Deflation, Durability. The return rate is 3.2%.

When does demand for 29th birthday decorations for women peak?

Demand peaks in Jan; the busiest month runs 1.9× the quietest.

What does it cost to enter the 29th birthday decorations for women niche?

Listings span $4.72–$26.83; the average listing price is $11.56 (sweet spot $15–$100). The average incumbent carries 826 reviews — the moat a new listing must climb.

29th birthday decorations for women

Worth a look

Shows no brand lock-in (top 5 brands take 35% of clicks), but soft demand (+0.6% this quarter) keeps it on the watch list.

Brand share

Incredible35%

top-5 brand share — no brand owns this niche

Competition

Great29%

top-5 click share — an open shelf

Review moat

Good826.12

avg incumbent reviews — the moat a new listing must climb

Price range

Good$4.72–$26.83

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

Conversion

Good4.4%

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

Returns

Okay3.2%

return rate — above 5% kills the launch gate

Avg price

Okay$11.56

avg listing price — sweet spot $15–$100

Market size

Okay$148K

$148K/yr · 290K searches

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Growth

Okay+0.6%

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

Signals No Dominant Brand Low Review Barrier

According to Flapen's Amazon United States niche tracking, 29th birthday decorations for women is a $148K/yr Amazon United States market (290K searches/yr). The top 5 brands hold 35% of demand. Demand peaks in Jan. Verdict: Worth a look — 52/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

29th birthday decorations for women market data

Units sold / yr: 10K–13K; avg 100–250/product
Revenue / yr: $116K–$145K; units × avg price
Conversion rate: 4.4%
Avg BSR: #3,953
Page quality: 0%
Prime: 100%
Sponsored: 83%
Out of stock: 1.8%
Avg brand age: 27 months
Avg seller age: 184 days

Competition & brand share

Clicks spread well past the top 5 (29% combined) — an open shelf where new products get seen.

Brands

50 rising

Sellers

Top-5 brand share

35%

Top 20: 78%

Top-5 click share

29%

Top 20: 67%

Open market

60%

PartyForever12%
Juesly6%
LaVenty6%
Unoggsor5%
CHINGYIA5%
pinkblume5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +0.6% search growth over the last 90 days.

Peak months: Jan · busiest ÷ quietest = 1.9×

Open Trend

Top 29th birthday decorations for women search terms

29th birthday decorations for women71K/yr -17.7%2.6% conv.
29 birthday decorations for women42K/yr +2.9%2.3% conv.
29th birthday decorations for men52K/yr -12.3%3.0% conv.
29 birthday decorations25K/yr +22.5%2.5% conv.
29 birthday decorations for men26K/yr +8.1%3.1% conv.
29th birthday26K/yr +3.9%2.0% conv.
29th birthday decorations17K/yr +50.6%2.5% conv.
29 birthday18K/yr +4.2%2.7% conv.
happy 29th birthday6K/yr +92.1%3.8% conv.
happy 29th birthday decorations7K/yr -26.0%3.9% conv.

All search terms

Top 29th birthday decorations for women 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

29th Birthday Party Decorations for Women Rose Gold Supplies Set with Last Year In My 20s Balloon Banner and Sash including 29 BDay Digit Balloons for Her

PartyForever$20.874.5★132 rev

LaVenty Last Year In my 20S Birthday Decorations 29th Birthday Decorations for Men 29 Balloon Number 29 Birthday Balloons

LaVenty$16.204.5★116 rev

Unoggsor Twenty Fucking Nine Cake Topper - Happy 29th Birthday Cake Decor - Cheers to 29 Years Birthday Party Decorations Supplies Black Glitter

Unoggsor$4.724.7★126 rev

Not 30 Yet Banner - Last Year In My 20s Happy 29th Birthday Banner Cheer to 29 Years Funny 29th Birthday Party Decorations Black Glitter

CHINGYIA$7.264.7★57 rev

Black 29th Birthday Decorations Number 29 Circle Dot Star Garland Streamer Banner Backdrop for Women Mens Cheers to 29 Years Old Birthday Happy 29th Anniversary Awesome Since 1997 Party Supplies

pinkblume$12.765.0★7 rev

Newest

by launch date

Black 29th Birthday Decorations Number 29 Circle Dot Star Garland Streamer Banner Backdrop for Women Mens Cheers to 29 Years Old Birthday Happy 29th Anniversary Awesome Since 1997 Party Supplies

pinkblume$12.767 rev

6mo ago

24PCS Black Happy 29th Birthday Cupcake Toppers Twenty Nine Straight Outta 1997 Cupcake Picks Cheers to 29 Lengend Since 1997 Cake Decorations for 29th Birthday Anniversary Party Decorations Supplies

ZHUOWEISM$6.92507 rev

8mo ago

29th Birthday Decorations for Women 32PCS 29th Birthday Party Decorations

Juesly$22.04752 rev

9mo ago

29th Birthday Decorations for Women 49pcs Black Rose Gold Black Happy 29th Birthday Banner Tablecloth Butterfly Decor Sash and Tiara Cake Topper Candles Balloons Arch

Juesly$21.511,308 rev

10mo ago

Last Year In my 20S Birthday Party Supplies for Men 29th Birthday Decorations include Balloon Banner Not 30 Yet Glitter Banner Cake Topper Cupcake Toppers Tablecloths(black and gold)

Generic$20.026 rev

10mo ago

What buyers say about 29th birthday decorations for women

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

What buyers love

Quality-Overall16%

“Good quality candles”

Advertised Vs Actual Product11%

“as described”

Color10%

“The colors are rich”

Value For Money10%

“Affordable prices”

Assembly/Installation7%

“Easy to assemble”

Size-Overall5%

“it was a pretty good size”

Material Quality5%

“the materials felt durable enough to last throughout the event”

Durability5%

“Used this for my sister's birthday, easy to use and durable”

Fun/Entertainment Experience5%

“Cute and fun”

Strength4%

“Sturdy enough”

What buyers complain about

Quality-Overall18%

“Balloons are poor quality”

Inflation/Deflation15%

“One ended up a little deflated”

Durability14%

“broke as it was opened”

Strength12%

“A little flimsy”

Strap/String Quality9%

“The white string makes it look cheap”

Size-Overall8%

“The cup is smaller than expected”

Advertised Vs Actual Product6%

“Came with every letter but what's shown in the photo. Extremely upset”

Material Quality2%

“The quality of material was poor”

Value For Money2%

“The value was substandard for the cost”

Top return reasons

Size-Overall32%

Value For Money14%

Advertised Vs Actual Product9%

Color9%

Quality-Overall7%

Inflation/Deflation4%

Defective Material/Parts3%

Functionality-Overall3%

Material Quality3%

Product Condition2%

Common questions

Is 29th birthday decorations for women profitable to sell on Amazon United States?: The niche generates $148K/yr across 65 tracked products. 1 of 22 products launched in the last 360 days are still selling. 90-day search growth is +0.6%. Flapen's verdict: Worth a look (52/100).
How competitive is the 29th birthday decorations for women niche?: 50 brands and 53 sellers compete. The top 5 products take 29% of clicks and top 5 brands hold 35% of demand.
What do buyers complain about in 29th birthday decorations for women?: Top complaints mined from reviews: Quality-Overall, Inflation/Deflation, Durability. The return rate is 3.2%.
When does demand for 29th birthday decorations for women peak?: Demand peaks in Jan; the busiest month runs 1.9× the quietest.
What does it cost to enter the 29th birthday decorations for women niche?: Listings span $4.72–$26.83; the average listing price is $11.56 (sweet spot $15–$100). The average incumbent carries 826 reviews — the moat a new listing must climb.