Is 18th birthday balloons profitable to sell on Amazon United Kingdom?

The niche generates £59K/yr across 56 tracked products. 0 of 17 products launched in the last 360 days are still selling. 90-day search growth is -8.4%. Flapen's verdict: Worth a look (55/100).

How competitive is the 18th birthday balloons niche?

38 brands and 40 sellers compete. The top 5 products take 33% of clicks and top 5 brands hold 52% of demand.

What do buyers complain about in 18th birthday balloons?

Top complaints mined from reviews: Inflation/Deflation, Quality-Overall, Color. The return rate is 0.8%.

When does demand for 18th birthday balloons peak?

Demand is steady year-round — the busiest month runs 1.6× the quietest.

What does it cost to enter the 18th birthday balloons niche?

Listings span £2.60–£12.99; the average listing price is £6.00 (sweet spot $15–$100). The average incumbent carries 1,041 reviews — the moat a new listing must climb.

18th birthday balloons

Worth a look

Shows low returns (0.8%), but prices mostly outside the sweet spot ($2.60–$12.99) keeps it on the watch list.

Returns

Incredible0.8%

return rate — above 5% kills the launch gate

Brand share

Great52%

top-5 brand share — no brand owns this niche

Competition

Great33%

top-5 click share — an open shelf

Conversion

Great7.3%

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

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Review moat

Good1,041.38

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-8.4%

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

Avg price

Bad£6.00

avg listing price — sweet spot $15–$100

Market size

Bad£59K

£59K/yr · 135K searches

Price range

Bad£2.60–£12.99

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, 18th birthday balloons is a £59K/yr Amazon United Kingdom market (135K searches/yr). The top 5 brands hold 52% of demand. Verdict: Worth a look — 55/100.

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

18th birthday balloons market data

Units sold / yr: 8K–10K; avg 100–250/product
Revenue / yr: £48K–£60K; units × avg price
Conversion rate: 7.3%
Avg BSR: #260
Page quality: 0%
Prime: 100%
Sponsored: 91%
Out of stock: 7.1%
Avg brand age: 23 months
Avg seller age: 191 days

Competition & brand share

Clicks spread well past the top 5 (33% combined) — an open shelf where new products get seen.

Brands

38 rising

Sellers

Top-5 brand share

52%

Top 20: 88%

Top-5 click share

33%

Top 20: 73%

Open market

43%

onehous17%
OFFCUP16%
Lingqiang7%
Sroeeshee6%
VICTERR6%
Ousuga5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -8.4% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.6×

Open Trend

Top 18th birthday balloons search terms

18th birthday balloons45K/yr -13.8%4.8% conv.
18 balloons29K/yr -5.1%5.2% conv.
18th balloons13K/yr -6.5%5.1% conv.
18th birthday balloons for boys7K/yr -1.8%5.8% conv.
18 balloons birthday girl7K/yr +5.2%5.9% conv.
18 balloon7K/yr -10.7%4.8% conv.
18th birthday balloons for girls7K/yr -7.0%5.8% conv.
18 balloons birthday boy5K/yr -4.4%8.3% conv.
18th birthday balloon5K/yr -3.5%2.0% conv.
18th balloons for boys4K/yr +5.5%6.7% conv.

All search terms

Top 18th birthday balloons 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

18th Birthday Decorations for Girls Rose Gold Happy 18th Birthday Balloons for Her Chrome Rose Gold 18th birthday Anniversary Party Supplies 18 Year Old Party Decorations

onehous£5.084.4★2,591 rev

OFFCUP Blue Number 18 Balloons 40 Inch Large Foil Number 1 & 8 Balloons Self Inflating 18th Birthday Balloon for 18 Year Boys Girls Men Women Anniversary Birthday Party Decorations Supplies

OFFCUP£3.424.1★1,274 rev

onehous 18th Birthday Decorations for Boys Girls Navy Blue Silver Happy 18th Birthday Balloons for Him Her 18th Birthdays Anniversary Party Supplies 18 Year Old Party Decorations

onehous£5.084.4★2,591 rev

OFFCUP Gold Number 18 Balloons 40 Inch Large Foil Number 1 & 8 Balloons Self Inflating 18th Birthday Balloon for 18 Year Boys Girls Men Women Anniversary Birthday Party Decorations Supplies

OFFCUP£3.374.2★1,157 rev

Ousuga 15 Pcs Black Gold 18th Birthday Balloons with Happy Birthday Latex Confetti for Boys Girls Men Women

Ousuga£4.374.6★56 rev

Newest

by launch date

Topeedy 16pcs 12inch Gold & Black 18th Birthday Balloons Humorous & Offensive Slogans Unisex-Adults

Topeedy£3.38123 rev

3mo ago

18th Birthday Decorations for Boys Girls AivaToba 18th Birthday Balloons with Black Gold 18th Birthday Banner Triangle Flag Banner Number 18 Foil Balloon 18 Year Old Birthday Party Decoration

AivaToba£10.54203 rev

3mo ago

Black Gold 18th Birthday Balloons - 30pcs Birthday Decorations for Boys and Girls with Ribbon Eighteen Latex Balloons for 18 Year Old Party Celebration

Sroeeshee£8.0950 rev

7mo ago

Dusty Pink Balloon Number 18 for 18th Birthday Decorations Girls Retro Blush Pink Gold Cream Latex Balloons with Large Bow Heart Foil Balloons for Boho 18 Year Old Birthday Anniversary Party Decor

Jobkoo£12.99237 rev

7mo ago

18th Birthday Decoration Balloons White Gold Confetti Beige Balloons for 18th Birthday Anniversary Party Supplies Happy 18th birthday Balloon for Him Her Champagne Gold White Theme Party Decoration

HolaFessta£4.7229 rev

8mo ago

What buyers say about 18th birthday balloons

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

What buyers love

Quality-Overall29%

“Good variety”

Value For Money25%

“Great value for money”

Color7%

“The colors feel soft”

Durability5%

“everything has great durability”

Advertised Vs Actual Product5%

“Perfect, as described”

Inflation/Deflation4%

“easy to inflate”

Size-Overall3%

“Good fit”

Design-Overall2%

“The rose gold theme looks elegant”

Thin2%

“thin material, right size”

Collectibles2%

“Good selection”

What buyers complain about

Inflation/Deflation24%

“by morning balloons were deflated”

Quality-Overall20%

“Poor quality”

Color9%

“Not matching colours”

Size-Overall6%

“Banner is very small”

Strength6%

“the curtain was very fragile - breaking just from walking through”

Assembly/Installation4%

“You also have to assemble everything”

Defective Material/Parts3%

“Item came with multiple rips so couldnt use it”

Durability3%

“burst within 24 hours”

Advertised Vs Actual Product2%

“Not as good as photo”

Value For Money1%

“looks more expensive than what they are”

Top return reasons

Color29%

Inflation/Deflation24%

Quality-Overall12%

Size-Overall6%

Advertised Vs Actual Product4%

Defective Material/Parts4%

Compatibility-Overall3%

Value For Money3%

Leak-Proof2%

Durability2%

Common questions

Is 18th birthday balloons profitable to sell on Amazon United Kingdom?: The niche generates £59K/yr across 56 tracked products. 0 of 17 products launched in the last 360 days are still selling. 90-day search growth is -8.4%. Flapen's verdict: Worth a look (55/100).
How competitive is the 18th birthday balloons niche?: 38 brands and 40 sellers compete. The top 5 products take 33% of clicks and top 5 brands hold 52% of demand.
What do buyers complain about in 18th birthday balloons?: Top complaints mined from reviews: Inflation/Deflation, Quality-Overall, Color. The return rate is 0.8%.
When does demand for 18th birthday balloons peak?: Demand is steady year-round — the busiest month runs 1.6× the quietest.
What does it cost to enter the 18th birthday balloons niche?: Listings span £2.60–£12.99; the average listing price is £6.00 (sweet spot $15–$100). The average incumbent carries 1,041 reviews — the moat a new listing must climb.