18th birthday card
Worth a lookShows low returns (0.2%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.2%return rate — above 5% kills the launch gate
Brand share
Incredible39%top-5 brand share — no brand owns this niche
Competition
Great27%top-5 click share — an open shelf
Review moat
Great250.65avg incumbent reviews — the moat a new listing must climb
Conversion
Great9.0%search→purchase rate — share of searches ending in a sale
Market size
Okay£175K£175K/yr · 455K searches
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-5.1%90-day search growth — must beat 0% to launch
Avg price
Bad£4.25avg listing price — sweet spot $15–$100
Price range
Bad£2.19–£11.66cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, 18th birthday card is a £175K/yr Amazon United Kingdom market (455K searches/yr). The top 5 brands hold 39% of demand. Verdict: Worth a look — 57/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
18th birthday card market data
- Units sold / yr
- 30K–40K
- avg 500–750/product
- Revenue / yr
- £128K–£170K
- units × avg price
- Conversion rate
- 9.0%
- Avg BSR
- #1,905
- Page quality
- 0%
- Prime
- 96%
- Sponsored
- 77%
- Out of stock
- 1.6%
- Avg brand age
- 26 months
- Avg seller age
- 174 days
Competition & brand share
Clicks spread well past the top 5 (27% combined) — an open shelf where new products get seen.Brands
45 rising
Sellers
70
Top-5 brand share
39%
Top 20: 80%
Top-5 click share
27%
Top 20: 64%
Open market
57%
- LimaLima9%
- Maise & Rose8%
- Gift Monster8%
- Me To You7%
- Stuff47%
- Virelle4%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -5.1% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top 18th birthday card search terms
- 18th birthday card240K/yr
- 18th birthday card girl51K/yr
- 18th birthday card boy43K/yr
- 18 birthday card21K/yr
- 18th birthday cards for boys11K/yr
- 18th birthday card for girls9K/yr
- happy 18th birthday card9K/yr
- 18th birthday card for boys9K/yr
- 18th birthday cards11K/yr
- 18th birthday cards for girls9K/yr
Top 18th birthday card 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
18th Birthday Card - Back in 2008 In This Year Card Greeting Card for Boys and Girls Birthday Cards for Girls Birthday Cards for Boys 18th Anniversary Card 5x7
Gift Monster£3.324.6★3,995 rev
Maise & Rose 18th Birthday Card For Her Pink Balloon 18 Years P194
Maise & Rose£4.034.5★63 rev
Brainbox Candy 18th Birthday | Age Card | Funny Humorous | Officially Old Enough | Sold
Brainbox Candy£3.284.7★1,137 rev
Funny 18th Birthday Card Your Childhood Has Expired
LimaLima£3.334.6★310 rev
Beautiful 18th Birthday Card Female Elegant Girl - Special Birthday Card for 18 Year old girl womens ladies Eighteen Eighteenth
Purple Fox£3.294.5★275 rev
Newest
by launch date
The Year that Was 2008 - Special 18th Birthday Card Book with Details about the Year of Birth (2008)
the lazy panda card company£4.95264 rev
Birthday Card for 18th Birthday. Stars Design with Blue foil. 150x150mm supplied with Envelope. Eco-friendly. Made in Britain.
Absolutely Yours£2.977 rev
Me To You Tatty Teddy 18 Today Luxury Gold Embellished Birthday Card 6 X 9 Inches - Official Collection
Me To You£2.1916 rev
JEKUGOT 18th Birthday Card for Girls 2008 Birthdays Gifts Card with Envelope 18th Birthday Gifts for Girls Women Anniversary Funny birthday Gift Personalised Party Decoration
JEKUGOT£4.50100 rev
Virelle 3D 18th Birthday Card with Red Heart Balloon for Her Daughter Sister Granddaughter | Happy 18th Birthday Gift Card for Women Blank Inside with Envelope (14x14 cm) (18th)
Virelle£3.3483 rev
Trending
90-day click momentumThe Year that Was 2008 - Special 18th Birthday Card Book with Details about the Year of Birth (2008)
the lazy panda card company£4.954.7★
Belloxis 18th Birthday Gifts for Boys Funny Mens Socks
Belloxis£5.704.5★
Birthday Card for 18th Birthday. Stars Design with Blue foil. 150x150mm supplied with Envelope. Eco-friendly. Made in Britain.
Absolutely Yours£2.975.0★
Lunella Stationery 18th Birthday Card for Boys and Girls - Bright and Bold Design Funny Actual Adult Card - Blank Inside With Kraft Envelope Age 18 (Actual Adult!)
Lunella Stationery£3.954.8★
18th Birthday Cards for Women Pink Glitter Balloons
Stuff4£3.344.6★
What buyers say about 18th birthday card
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality card”
“Good Value”
“Just as advertised”
“I thoroughly enjoyed reading it all”
“The design is perfect for either a son or daughter”
“Colours are bright”
“The print quality is clear”
“Lovely- good quality card - arrived on time”
“not flimsy will stand up proud”
“It's probably fine to offer alongside a main present”
What buyers complain about
“Little small”
“This card is at the more expensive end of the scale - currently £13”
“to be honest the design is really dated for those who will be recieving it”
“not luxurious as expected”
“After wearing twice the metal parts went a full colour”
“this wasn't very good quality”
“Envelope doesnt even have any glue so had to use tape to stick it down”
“they will spot the errors immediately”
“Sorry no picture”
“so there isn't much space to write a long personal message”
Top return reasons
Common questions
- Is 18th birthday card profitable to sell on Amazon United Kingdom?
- The niche generates £175K/yr across 69 tracked products. 0 of 36 products launched in the last 360 days are still selling. 90-day search growth is -5.1%. Flapen's verdict: Worth a look (57/100).
- How competitive is the 18th birthday card niche?
- 45 brands and 70 sellers compete. The top 5 products take 27% of clicks and top 5 brands hold 39% of demand.
- What do buyers complain about in 18th birthday card?
- Top complaints mined from reviews: Size-Overall, Value For Money, Design-Overall. The return rate is 0.2%.
- When does demand for 18th birthday card peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the 18th birthday card niche?
- Listings span £2.19–£11.66; the average listing price is £4.25 (sweet spot $15–$100). The average incumbent carries 251 reviews — the moat a new listing must climb.