birthday king
Skip itA concentrated shelf (top 5 take 77% of clicks) — this niche doesn't clear our bar today.
Review moat
Great324avg incumbent reviews — the moat a new listing must climb
Conversion
Good6.5%search→purchase rate — share of searches ending in a sale
Avg price
Okay$11.49avg listing price — sweet spot $15–$100
Brand share
Okay82%top-5 brand share — brands hold most of the demand
Returns
Okay3.9%return rate — above 5% kills the launch gate
Market size
Okay$183K$183K/yr · 246K searches
Price range
Okay$4.97–$20.85cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Bad-2.8%90-day search growth — must beat 0% to launch
Competition
Bad77%top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, birthday king is a $183K/yr Amazon United States market (246K searches/yr). The top 5 brands hold 82% of demand. Verdict: Skip it — 39/100.
Data updated Jul 23, 2026 · scored weekly · How we score niches
birthday king market data
- Units sold / yr
- 15K–20K
- avg 250–500/product
- Revenue / yr
- $172K–$230K
- units × avg price
- Conversion rate
- 6.5%
- Avg BSR
- #11,867
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 92%
- Out of stock
- 0.0%
- Avg brand age
- 29 months
- Avg seller age
- 183 days
Competition & brand share
The top 5 products capture 77% of clicks — a locked-up shelf that new listings rarely crack.Brands
11 falling
Sellers
16
Top-5 brand share
82%
Top 20: 100%
Top-5 click share
77%
Top 20: 100%
Open market
14%
- Docooniver41%
- Luwigs11%
- Asija10%
- JITINX10%
- NA9%
- TITIKADI4%
- Open — no brand owns it (5 brands, 14%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -2.8% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.7×
Top birthday king search terms
- birthday sash for men52K/yr
- birthday king40K/yr
- birthday crown for men38K/yr
- birthday king crown20K/yr
- birthday king sash15K/yr
- birthday accessories for men13K/yr
- birthday crown men9K/yr
- king birthday decorations10K/yr
- birthday sash men8K/yr
- mens birthday sash8K/yr
Top birthday king 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 13 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Docooniver 2 Pack Its my Birthday Sash for Women Men Adult Girls Kids Happy Birthday Decorations Accessories Gifts Black and White Sashes with Gold and Rose Gold Lettering
Docooniver$6.224.7★1,469 rev
Asija Birthday Gifts for Men Birthday Decorations for Men Party Decor Supplies including King Crown & Sash & Greeting Card
Asija$15.804.6★354 rev
NA King Crown and Birthday Sash Prom Decoration Gifts for Men (Gold-1)
NA$15.434.8★1,300 rev
Luwigs Birthday King Sash for Men or Boy Birthday Party Decoration Supplies Gold Foil Letter and Black Satin Sash Birthday Party Favors (Black)
Luwigs$6.004.6★165 rev
JITINX King Crown and Birthday Sash King Crown for Men Gold Mens Tiara Prince Diadem Royal Medieval Cosplay Birthday Prom Halloween Hair Accessories (Antique Gold Black Crown)
JITINX$16.754.6★343 rev
Newest
by launch date
JITINX King Crown & Birthday Sash for Birthday Prom Party Prom Decoration Gifts for Men Costume Wedding Halloween Fathers Day Gift for Men Father Husband Friend (Gold Black)
JITINX$12.8049 rev
Edussy 3 pcs Black Birthday Decorations for Men Set Happy Birthdays Sunglasses Gothic Birthdays King Crown and Sash for Birthday Gifts for Men and Him
Edussy$20.8534 rev
Its A Real Kings Birthday Shirt for Men Birthday Gift for Men Husband Boyfriend Brother Graphic Tee White
CMNOPZ$15.463 rev
JITINX King Crown and Birthday Sash King Crown for Men Gold Mens Tiara Prince Diadem Royal Medieval Cosplay Birthday Prom Halloween Hair Accessories (Antique Gold Black Crown)
JITINX$16.75343 rev
Birthday King Sash Gold Foil Letter and Black Satin Birthday Sash for Men Birthdays Boy Sashes Funny Birthdays Party Decorations for Men & Boys Party Favors Supplies (Black)
Piriuuo$4.9712 rev
Trending
90-day click momentumIts A Real Kings Birthday Shirt for Men Birthday Gift for Men Husband Boyfriend Brother Graphic Tee White
CMNOPZ$15.463.6★
Edussy 3 pcs Black Birthday Decorations for Men Set Happy Birthdays Sunglasses Gothic Birthdays King Crown and Sash for Birthday Gifts for Men and Him
Edussy$20.854.7★
JITINX King Crown & Birthday Sash for Birthday Prom Party Prom Decoration Gifts for Men Costume Wedding Halloween Fathers Day Gift for Men Father Husband Friend (Gold Black)
JITINX$12.804.2★
Docooniver 2 Pack Its my Birthday Sash for Women Men Adult Girls Kids Happy Birthday Decorations Accessories Gifts Black and White Sashes with Gold and Rose Gold Lettering
Docooniver$6.224.7★
GLITZJOY Birthday Sash BIRTHDAY BADDIE SASH Black Glitter Sash with Gold Foil Sparkly Satin Birthday Sash for Women Girls Men Decorations for Party Supplies
GLITZJOY$6.964.7★
What buyers say about birthday king
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality”
“Great value”
“It fit nice, looked beautiful”
“Did the job”
“Heavy duty crown”
“Great gift”
“Very elegant”
“It wasn't too heavy the weight was just right very nice”
“Keepsake material”
“It is adjustable”
What buyers complain about
“Heavier than I thought it would be”
“the rest just gave up on life”
“It wasn't a good fit for the birthday boy's head”
“The lettering fell off after am hour of normal weat8”
“the quality wasnt the best for the lettering”
“letters fell off as soon as i started wearing it. theyre plastic and glued on.”
“He said it was uncomfortable”
“slides around and off the shoulder”
“Material is like ribbon”
“expensive”
Top return reasons
Common questions
- Is birthday king profitable to sell on Amazon United States?
- The niche generates $183K/yr across 13 tracked products. 2 of 4 products launched in the last 360 days are still selling. 90-day search growth is -2.8%. Flapen's verdict: Skip it (39/100).
- How competitive is the birthday king niche?
- 11 brands and 16 sellers compete. The top 5 products take 77% of clicks and top 5 brands hold 82% of demand.
- What do buyers complain about in birthday king?
- Top complaints mined from reviews: Weight Heavy, Durability, Size-Overall. The return rate is 3.9%.
- When does demand for birthday king peak?
- Demand is steady year-round — the busiest month runs 1.7× the quietest.
- What does it cost to enter the birthday king niche?
- Listings span $4.97–$20.85; the average listing price is $11.49 (sweet spot $15–$100). The average incumbent carries 324 reviews — the moat a new listing must climb.