Is sister birthday card profitable to sell on Amazon United Kingdom?

The niche generates £431K/yr across 68 tracked products. 0 of 20 products launched in the last 360 days are still selling. 90-day search growth is -1.0%. Flapen's verdict: Worth a look (60/100).

How competitive is the sister birthday card niche?

38 brands and 60 sellers compete. The top 5 products take 29% of clicks and top 5 brands hold 44% of demand.

What do buyers complain about in sister birthday card?

Top complaints mined from reviews: Functionality-Overall, Advertised Vs Actual Product, Size-Overall. The return rate is 0.1%.

When does demand for sister birthday card peak?

Demand is steady year-round — the busiest month runs 1.7× the quietest.

What does it cost to enter the sister birthday card niche?

Listings span £1.65–£7.86; the average listing price is £3.36 (sweet spot $15–$100). The average incumbent carries 255 reviews — the moat a new listing must climb.

sister birthday card

Worth a look

Shows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Brand share

Great44%

top-5 brand share — no brand owns this niche

Review moat

Great255.43

avg incumbent reviews — the moat a new listing must climb

Conversion

Great9.8%

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

Competition

Great29%

top-5 click share — an open shelf

Market size

Good£431K

£431K/yr · 1.3M searches

Growth

Bad-1.0%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Avg price

Bad£3.36

avg listing price — sweet spot $15–$100

Price range

Bad£1.65–£7.86

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, sister birthday card is a £431K/yr Amazon United Kingdom market (1.3M searches/yr). The top 5 brands hold 44% of demand. Verdict: Worth a look — 60/100.

Data updated Jul 29, 2026 · scored weekly · How we score niches

sister birthday card market data

Units sold / yr: 100K–125K; avg 1,000–1,250/product
Revenue / yr: £336K–£420K; units × avg price
Conversion rate: 9.8%
Avg BSR: #1,592
Page quality: 0%
Prime: 96%
Sponsored: 76%
Out of stock: 2.1%
Avg brand age: 29 months
Avg seller age: 168 days

Competition & brand share

Clicks spread well past the top 5 (29% combined) — an open shelf where new products get seen.

Brands

38 falling

Sellers

Top-5 brand share

44%

Top 20: 89%

Top-5 click share

29%

Top 20: 69%

Open market

50%

Piccadilly Greetings13%
Cherry Orchard9%
Printperfect8%
Me To You7%
Central 237%
Emotional Rescue6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -1.0% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.7×

Open Trend

Top sister birthday card search terms

sister birthday card732K/yr -2.0%6.6% conv.
birthday card sister132K/yr -0.4%7.1% conv.
birthday card for sister65K/yr -5.3%7.0% conv.
birthday cards for sister59K/yr -9.2%6.8% conv.
sister birthday cards47K/yr -1.9%5.8% conv.
funny sister birthday card38K/yr -1.2%2.5% conv.
sister birthday card funny38K/yr +1.5%2.8% conv.
happy birthday sister card36K/yr +8.6%6.2% conv.
sister card33K/yr +14.0%6.3% conv.
happy birthday sister19K/yr +1.6%3.8% conv.

All search terms

Top sister 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.

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

Cherry Orchard Fabulous Sister Birthday Card with Envelope Gorgeous design of Cocktail glasses Balloons flowers & hearts - Gold Foil Finish

Cherry Orchard£2.664.8★318 rev

Model Family Funny Birthday Card for Sister - Amazing Sister Night Out - Humourous Greetings Card Multi-Coloured 18.4 x 15.4 cm

Emotional Rescue£3.364.7★111 rev

Funny Retro Card For Women - Bucket List - Hilarious Birthday Greeting Cards For Sister Cousin Nana Mum - Best Friend Birthday Ideas - Mothers Day Gift for Her - Comes With Stickers

Central 23£3.374.8★419 rev

Hallmark Birthday Card for Sister Classic Floral Design Green Pink

Hallmark£2.544.6★1,725 rev

Piccadilly Greetings Piccadilly Greetings A20202 Traditional Birthday Card Sister - 9 x 6 inches red

Piccadilly Greetings£3.344.6★189 rev

Newest

by launch date

Mirelia Sister Birthday Card Happy Birthday Card For Sister From Sister Or Brother Premium Card With Sweet Inside Message 20.5 x 13.5 cm with Envelope

Mirelia£4.2939 rev

3mo ago

Funny Birthday Card for Sister Sheep & Paparazzi Wolves Design Cute Humorous A5 Card with Red Envelope Thick Premium Matte Finish Blank Inside

Sildecy£3.643 rev

4mo ago

Birthday Card for Sister. Floral Heart Design with Gold Foiled text. 150x150mm supplied with Envelope. Eco-friendly. Message inside. Made in Britain.

Absolutely Yours£3.2623 rev

4mo ago

Me To You Tatty Teddy Fabulous Sister Cute Luxury Gold Foil Birthday Card 6 X 9 Inches - Official Collection

Me To You£2.1436 rev

5mo ago

Me To You Tatty Teddy Sister Bears With Heart Glasses Luxury Gold Foil Birthday Card 5 X 7 Inches - Official Collection

Me To You£1.6512 rev

6mo ago

What buyers say about sister birthday card

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

What buyers love

Quality-Overall41%

“Brilliant quality”

Value For Money22%

“Good Price”

Fun/Entertainment Experience7%

“Good quality funny card”

Advertised Vs Actual Product7%

“Just as it was advertised”

Size-Overall5%

“nice size”

Design-Overall5%

“beautiful design”

Color3%

“Bright and lovely”

Print Quality1%

“Clearly printed on glossy 300gsm thick cardstock”

Thickness1%

“seems to be a nice thick card”

Paper Quality1%

“The card is thick and good quality and the printing is sharp and vivid”

What buyers complain about

Functionality-Overall24%

“The card arrived yesterday not working”

Advertised Vs Actual Product21%

“Not quite what it looks like”

Size-Overall10%

“Quite small”

Value For Money10%

“This card was poor value for the price”

Gifting Purpose6%

“disappointed that it did not come with an envelope is that normal procedure when buying a birthday card confused”

Quality-Overall5%

“Cheap and not as in photo”

Flatness4%

“it's just a flat image”

Print Quality4%

“The stuff printed on the back is a little obtrusive”

Wrinkles2%

“The inner is also wrinkled - quality very disappointing overall”

Adhesion/Stickiness2%

“it had no adhesive around the flap to seal it”

Top return reasons

Functionality-Overall53%

Quality-Overall12%

Defective Material/Parts6%

Advertised Vs Actual Product4%

Display Colors2%

Moist/Dry2%

Color2%

Value For Money2%

Battery Life2%

Mechanism Issues2%

Common questions

Is sister birthday card profitable to sell on Amazon United Kingdom?: The niche generates £431K/yr across 68 tracked products. 0 of 20 products launched in the last 360 days are still selling. 90-day search growth is -1.0%. Flapen's verdict: Worth a look (60/100).
How competitive is the sister birthday card niche?: 38 brands and 60 sellers compete. The top 5 products take 29% of clicks and top 5 brands hold 44% of demand.
What do buyers complain about in sister birthday card?: Top complaints mined from reviews: Functionality-Overall, Advertised Vs Actual Product, Size-Overall. The return rate is 0.1%.
When does demand for sister birthday card peak?: Demand is steady year-round — the busiest month runs 1.7× the quietest.
What does it cost to enter the sister birthday card niche?: Listings span £1.65–£7.86; the average listing price is £3.36 (sweet spot $15–$100). The average incumbent carries 255 reviews — the moat a new listing must climb.