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18th Birthday Card

Maybe

An estimated 0.2% of orders come back. But prices span $2.19–$11.66, mostly outside the sweet spot, so 18th Birthday Card is a Maybe.

Flapen Score
57
57 / 100
Top 11% of 835 Stationery & Office Supplies niches · +10 vs the category median of 47
Market size
£175K/yr455K searches / yr
90-day growth
-5.1%search demand this quarter
Competition
27%top-5 click share · 45 brands · 70 sellers

Flapen Score

18th Birthday Card against its category

The dotted line is the Stationery & Office Supplies average. Past it, 18th Birthday Card is stronger. Inside it, weaker.

57Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The 18th Birthday Card market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for 18th Birthday Card 455K times last year and spent an estimated £175K. The top 5 brands take 39% of clicks. Flapen scores it 57 out of 100, a Maybe.

01 · Demand

An estimated 9.0% of those searches ended in a purchase.

Shoppers searched for this 455K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 9.0% of those searches ended in a purchase. Searches in the last 90 days moved -5.1% against the 90 days before. Searches, conversion and average price together put the market at an estimated £175K a year.

Searches, last 12 months
455K
Growth, 90 days vs prior 90
-5.1%
Conversion, latest week
9.0%
Market size, estimated
£175Ka year
Peak month
January1.5× the quietest month
Top search term
18th birthday card240K searches a year

02 · Price

A sale here is worth £4.25.

Listings sell for £4.25 on average, from £2.19 to £11.66. Amazon reports units sold in ranges. This niche sold 30K to 40K a year. The average listing sells 500 to 750 of them. At £4.25 that is £2K to £3K a year per listing.

Average price
£4.25under the $15 to $100 sweet spot
Price range
£2.19–£11.66
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
30K–40K
Units per listing a year
500–750
Revenue per listing a year
£2K–£3K
Returns
0.2%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is low.

77% of listings pay for placement with sponsored ads. 96% ship with Prime. On an average day, 1.6% of listings are out of stock. The average listing ranks #1,905 within Cards & Card Stock. It carries 251 reviews at 4.61 stars, so a new listing needs social proof before a better product.

Sponsored listings
77%
Prime listings
96%
Out of stock, average day
1.6%
Average rank
#1,905in Cards & Card Stock
Average rating
4.61 starsAmazon United Kingdom average 4.36 stars
Average reviews
251per listing
Listings tracked
69

04 · Newcomers

0 of last year's 36 launches cleared the first-year sales bar.

36 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 26 months on average, so a newcomer is not facing entrenched names.

Launched, last 12 months
36
Successful launches
0Amazon's first-year sales bar
Average brand age
26 months

Products

Top 18th Birthday Card products & what they sell for

The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.

Prices and ratings read from Amazon on Jul 29, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 27% of clicks, no more. An open shelf where new products get seen.

£0£3K£7K£10K£14K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

45 rising

Sellers

70

Est. top-5 brand share

39%

Top 20: 80%

Est. top-5 click share

27%

Top 20: 64%

Open market

57%

  • LimaLima9%
  • Maise & Rose8%
  • Gift Monster8%
  • Me To You7%
  • Stuff47%
  • Virelle4%

Demand

18th Birthday Card search demand

Weekly searches over the year, seasonality beneath. Pick a range.

10K6KSpike '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Search terms

Top 18th Birthday Card search terms shoppers use

The exact words shoppers type, with estimated yearly volume, growth, and conversion.

  • 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

Reviews and returns

What reviews say buyers love and hate about 18th Birthday Card

We read the reviews and the return reasons for every product selling here.

35%of positive reviews mention “Quality-Overall”
35%of negative reviews mention “Size-Overall”
0.2%of orders come back
“Little small”
A buyer, on “Size-Overall”35% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

21 topics

NegativePositive

FAQ

Common 18th Birthday Card questions

Answered from the same tracked data.

Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data