Is 100th birthday decorations profitable to sell on Amazon United States?

The niche generates $168K/yr across 96 tracked products. 2 of 28 products launched in the last 360 days are still selling. 90-day search growth is -7.2%. Flapen's verdict: Worth a look (55/100).

How competitive is the 100th birthday decorations niche?

65 brands and 69 sellers compete. The top 5 products take 18% of clicks and top 5 brands hold 26% of demand.

What do buyers complain about in 100th birthday decorations?

Top complaints mined from reviews: Size-Overall, Thickness, Color. The return rate is 3.0%.

When does demand for 100th birthday decorations peak?

Demand peaks in Jan; the busiest month runs 2.2× the quietest.

What does it cost to enter the 100th birthday decorations niche?

Listings span $5.63–$26.63; the average listing price is $12.32 (sweet spot $15–$100). The average incumbent carries 1,123 reviews — the moat a new listing must climb.

100th birthday decorations

Worth a look

Shows no brand lock-in (top 5 brands take 26% of clicks), but soft demand (-7.2% this quarter) keeps it on the watch list.

Brand share

Incredible26%

top-5 brand share — no brand owns this niche

Competition

Incredible18%

top-5 click share — an open shelf

Conversion

Good5.8%

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

Review moat

Good1,123.24

avg incumbent reviews — the moat a new listing must climb

Price range

Good$5.63–$26.63

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

Avg price

Good$12.32

avg listing price — sweet spot $15–$100

Returns

Okay3.0%

return rate — above 5% kills the launch gate

Market size

Okay$168K

$168K/yr · 234K searches

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-7.2%

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

Signals No Dominant Brand

According to Flapen's Amazon United States niche tracking, 100th birthday decorations is a $168K/yr Amazon United States market (234K searches/yr). The top 5 brands hold 26% of demand. Demand peaks in Jan. Verdict: Worth a look — 55/100.

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

100th birthday decorations market data

Units sold / yr: 13K–15K; avg 0–100/product
Revenue / yr: $154K–$185K; units × avg price
Conversion rate: 5.8%
Avg BSR: #1,611
Page quality: 0%
Prime: 100%
Sponsored: 93%
Out of stock: 5.0%
Avg brand age: 32 months
Avg seller age: 190 days

Competition & brand share

Clicks spread well past the top 5 (18% combined) — an open shelf where new products get seen.

Brands

65 falling

Sellers

Top-5 brand share

26%

Top 20: 65%

Top-5 click share

18%

Top 20: 50%

Open market

70%

DARUNAXY7%
YeohJoy6%
Juhap4%
Ryzovo4%
ZHUOWEISM4%
JunyRuny4%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -7.2% search growth over the last 90 days.

Peak months: Jan · busiest ÷ quietest = 2.2×

Open Trend

Top 100th birthday decorations search terms

100th birthday decorations92K/yr -23.7%4.8% conv.
100th birthday30K/yr -22.5%2.3% conv.
100 birthday decorations for women11K/yr +74.8%4.5% conv.
100 year old birthday decorations17K/yr +9.9%4.3% conv.
100 years12K/yr +16.4%0.3% conv.
100th birthday banner8K/yr +31.4%2.4% conv.
100th birthday party supplies11K/yr -11.1%2.1% conv.
100th birthday napkins8K/yr +9.5%4.3% conv.
happy 100th birthday banner7K/yr +6.8%4.7% conv.
100th birthday decorations for women6K/yr +21.0%3.6% conv.

All search terms

Top 100th 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

DARUNAXY 100th Birthday Party Decoration Vintage Back in 1926 Banner 100 Year Old Birthday Party Poster Supplies Vintage 1926 Backdrop Photography Background for Men & Women 100th Class Reunion Decor

DARUNAXY$13.674.8★1,310 rev

100th Birthday Party Decorations for Women & Men Pre-Strung 100 YEARS LOVED Banner - Gold Glitter Happy 100 Year Old Birthday Sign Gifts for Him & Her

JunyRuny$8.844.5★23 rev

15 PCS 100th Birthday Centerpiece Sticks Happy 100th Vintage 1926 Table Flower Centerpieces Sticks Cheers to 100 Fabulous Floral Decorations 100th Birthday Party Centerpieces Supplies Rose Gold

ZHUOWEISM$9.574.6★390 rev

100th Birthday Decorations for Women 100th Rose Gold Birthday Party Supplies 100 Years Celebration Kit Including Backdrop Crown Sash banner Hanging Swirl Balloons Paper Fans for Her

Ryzovo$19.534.6★63 rev

41PCS 100th Birthday Decorations Rose Gold 100th Party Disposable Tableware Set Include 100 Year Old Birthday Plates and Napkins Plastic Tablecloth For 100 Year Old Gifts Women

SNIMICS$12.434.7★1,103 rev

Newest

by launch date

Flower 100th Birthday Banner Decorations for Women Pink Roses Floral Happy 100th Birthday Banner Backdrop for 100 Years Old Anniversary Party Home Wall Outdoor Indoor Photo Booth Background Supplies

LUUFILx$8.9268 rev

5mo ago

Vlipoeasn Pink 100th Birthday Table Decoration for Women Large Vintage 1926 Poster Rose Gold Back in 1926 Acrylic Table Sign 100th Class Reunion Decor 100 Year Old Birthday Party Supplies

Vlipoeasn$11.77278 rev

7mo ago

100th Birthday Decorations for Women 32PCS 100th Birthday Party Decorations

Juesly$22.46752 rev

9mo ago

DARUNAXY 100th Birthday Party Decoration Vintage Back in 1926 Banner 100 Year Old Birthday Party Poster Supplies Vintage 1926 Backdrop Photography Background for Men & Women 100th Class Reunion Decor

DARUNAXY$13.671,310 rev

10mo ago

100th Birthday Decorations for Women 100th Rose Gold Birthday Party Supplies 100 Years Celebration Kit Including Backdrop Crown Sash banner Hanging Swirl Balloons Paper Fans for Her

Ryzovo$19.5363 rev

10mo ago

What buyers say about 100th birthday decorations

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

What buyers love

Quality-Overall25%

“good quality and complete setting just as described”

Advertised Vs Actual Product10%

“exactly as described”

Design-Overall8%

“Decor was beautiful”

Gifting Purpose8%

“Gift”

Color8%

“Beautiful color”

Value For Money6%

“Worth the money”

Size-Overall4%

“nice size”

Soft Feel3%

“The blanket is soft”

Fun/Entertainment Experience2%

“it's still a fun card”

Durability2%

“These were durable”

What buyers complain about

Size-Overall17%

“The card was a lot bigger than I expected”

Thickness15%

“were pretty careful so I think the balloons may have been too thin”

Color6%

“Not a good color match”

Instructions/User Manual/Troubleshooting6%

“No instructions”

Durability6%

“The balloons did not last”

Advertised Vs Actual Product5%

“Not as nice as the picture”

Functionality-Overall5%

“Candle malfunction”

Quality-Overall4%

“They need some improvement”

Print Quality4%

“I should've read the fine print”

Weight Heavy3%

“too heavy”

Top return reasons

Size-Overall32%

Advertised Vs Actual Product18%

Color17%

Value For Money9%

Quality-Overall5%

Print Quality2%