Is 16th birthday decorations profitable to sell on Amazon United Kingdom?

The niche generates £315K/yr across 69 tracked products. 0 of 19 products launched in the last 360 days are still selling. 90-day search growth is -6.6%. Flapen's verdict: Worth a look (64/100).

How competitive is the 16th birthday decorations niche?

50 brands and 79 sellers compete. The top 5 products take 25% of clicks and top 5 brands hold 39% of demand.

What do buyers complain about in 16th birthday decorations?

Top complaints mined from reviews: Quality-Overall, Advertised Vs Actual Product, Size-Overall. The return rate is 0.6%.

When does demand for 16th birthday decorations peak?

Demand is steady year-round — the busiest month runs 1.9× the quietest.

What does it cost to enter the 16th birthday decorations niche?

Listings span £2.72–£16.51; the average listing price is £7.32 (sweet spot $15–$100). The average incumbent carries 464 reviews — the moat a new listing must climb.

16th birthday decorations

Worth a look

Shows low returns (0.6%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.6%

return rate — above 5% kills the launch gate

Brand share

Incredible39%

top-5 brand share — no brand owns this niche

Competition

Great25%

top-5 click share — an open shelf

Review moat

Great464.29

avg incumbent reviews — the moat a new listing must climb

Conversion

Great7.2%

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

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Market size

Good£315K

£315K/yr · 600K searches

Growth

Bad-6.6%

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

Avg price

Bad£7.32

avg listing price — sweet spot $15–$100

Price range

Bad£2.72–£16.51

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

Signals No Dominant Brand

According to Flapen's Amazon United Kingdom niche tracking, 16th birthday decorations is a £315K/yr Amazon United Kingdom market (600K searches/yr). The top 5 brands hold 39% of demand. Verdict: Worth a look — 64/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

16th birthday decorations market data

Units sold / yr: 30K–40K; avg 250–500/product
Revenue / yr: £220K–£293K; units × avg price
Conversion rate: 7.2%
Avg BSR: #248
Page quality: 0%
Prime: 100%
Sponsored: 88%
Out of stock: 6.4%
Avg brand age: 23 months
Avg seller age: 172 days

Competition & brand share

Clicks spread well past the top 5 (25% combined) — an open shelf where new products get seen.

Brands

50 falling

Sellers

Top-5 brand share

39%

Top 20: 73%

Top-5 click share

25%

Top 20: 58%

Open market

61%

VICTERR17%
Sheinly7%
OakTree4%
DJLLA4%
weeyin4%
DEARLIVES4%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -6.6% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.9×

Open Trend

Top 16th birthday decorations search terms

16th birthday decorations281K/yr -9.0%3.9% conv.
sweet 16 birthday decorations42K/yr -1.5%2.7% conv.
16th birthday decorations boy36K/yr +2.6%4.5% conv.
16 birthday decorations41K/yr -1.9%4.2% conv.
16th birthday banner42K/yr -13.1%3.5% conv.
16 balloons20K/yr -5.6%3.7% conv.
16th birthday decorations girl17K/yr +0.9%3.7% conv.
16th birthday balloons20K/yr -19.1%4.1% conv.
boys 16th birthday decorations13K/yr +7.0%3.8% conv.
happy 16th birthday banner13K/yr -2.8%4.9% conv.

All search terms

Top 16th 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

Sweet 16th Birthday Decorations Rose Gold Birthday Balloons Girl Party Decorations Set With 16th Banner Champagne Balloon Triangle Flag Banner

VICTERR£9.874.4★3,914 rev

VICTERR 16th Birthday Decorations Boys Blue and Silver Happy Birthday Banner Triangle Flag Banners 32inch Balloon Cake Topper Navy Blue Silver Confetti Balloons Ribbons

VICTERR£8.114.4★392 rev

Gold & White 16th Birthday Decorations - Banner Balloons Cake Topper & Confetti for Girls Sweet 16 Party

DJLLA£8.144.3★1,033 rev

16th Birthday Decorations for Boys Girls 16th Birthday Balloons Black Gold with 16 Balloons Triangle Flag Banner Banner | 16 Year Old Party Supplies Decor

weeyin£9.594.5★2,924 rev

Girls 16th Birthday Decorations Black Rose Gold 16th Birthday Party Decorations Banner Bunting Kit Girls Sweet Sixteen by Sheinly

Sheinly£5.024.4★342 rev

Newest

by launch date

16th Birthday Decorations for Girls 49pcs Black Rose Gold Black Happy 16th Birthday Banner Tablecloth Butterfly Decor Sash and Tiara Cake Topper Candles Balloons Arch

Amosking£16.5140 rev

5mo ago

Sweet 16th Birthday Decorations - Rose Gold Sweet 16 Decorations Include Banner Fringe Curtains Latex Balloons Crown Sash Cake Topper & Number Balloon for BD Party Decor

FUNTE£12.0321 rev

6mo ago

Omrel Rose Gold 16th Birthday Decoration for Girls - Happy 16th Birthday Banner Triangle Flag Banner Number 16th Birthday Balloons for Party Decorations

Omrel£9.9750 rev

7mo ago

Happy 16th Birthday Banner Extra Large Fabric Backdrop for Home Outdoor Decorations 72 x 44 Inch Black Gold Fireworks Balloon Photo Booth Background Banner for Party Supplies

WUDEUI£5.4124 rev

7mo ago

Happy 16th Birthday Banner Flashing Black Banners for Boys and Girls 16th Birthday Decorations (Age16)

Ethlomoer£4.1787 rev

10mo ago

What buyers say about 16th birthday decorations

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

What buyers love

Quality-Overall37%

“Great Quality and Easy to Set Up”

Value For Money16%

“Good price”

Color11%

“absolutely loved the colour”

Advertised Vs Actual Product6%

“Did the job”

Assembly/Installation6%

“Assembly was fairly straightforward”

Brightness/Shine/Glow3%

“Its lovely and bright on the walls”

Ease Of Use2%

“Convenient Kit”

Durability2%

“Lasted a while”

Thickness2%

“This is very thick and excellent quality”

Material Quality2%

“looks much better than plastic table cloth material”

What buyers complain about

Quality-Overall32%

“Cheap quality”

Advertised Vs Actual Product11%

“Is not as advertised”

Size-Overall9%

“These are brilliant smaller than I expected”

Value For Money6%

“Expensive for what it is”

Assembly/Installation6%

“patience to put them together”

Durability3%

“then when blew up with helium they didnt last long before all falling down”

Strap/String Quality3%

“The string for the balloons wasnt included when stated it was Biden didnt receive that”

Inflation/Deflation3%

“Either difficult to inflate or dont stay inflated”

Defective Material/Parts3%

“some bits were broken”

Flammable3%

“went up in flames”

Top return reasons

Color21%

Size-Overall18%

Quality-Overall15%

Advertised Vs Actual Product7%

Inflation/Deflation7%

Functionality-Overall6%

Defective Material/Parts4%

Value For Money4%