Lego Birthday Party Supplies
PassLego Birthday Party Supplies scores 65 out of 100, a Pass. Shoppers spend an estimated $862K a year here, demand is soft, at -4.7% this quarter, and an estimated 2.0% of orders come back.
- Flapen Score
- 65 / 100Top 3% of 11,240 Home & Kitchen niches · +16 vs the category median of 4965
- Market size
- $862K/yr1.2M searches / yr
- 90-day growth
- -4.7%search demand this quarter
- Competition
- 27%top-5 click share · 44 brands · 130 sellers
Flapen Score
Lego Birthday Party Supplies against its category
The dotted line is the Home & Kitchen average. Past it, Lego Birthday Party Supplies is stronger. Inside it, weaker.
Market
The Lego Birthday Party Supplies market on Amazon at a glance
Shoppers on Amazon United States searched for Lego Birthday Party Supplies 1.2M times last year and spent an estimated $862K. The top 5 brands take 35% of clicks. Demand peaks in Jan. Flapen scores it 65 out of 100, a Pass.
01 · Demand
An estimated 4.3% of those searches ended in a purchase.
Shoppers searched for this 1.2M times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 4.3% of those searches ended in a purchase. Searches in the last 90 days moved -4.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $862K a year.
- Searches, last 12 months
- 1.2M
- Growth, 90 days vs prior 90
- -4.7%
- Conversion, latest week
- 4.3%
- Market size, estimated
- $862Ka year
- Peak month
- January1.9× the quietest month
- Top search term
- lego birthday decorations303K searches a year
02 · Price
A sale here is worth $17.38.
Listings sell for $17.38 on average, from $4.37 to $53.36. Amazon reports units sold in ranges. This niche sold 40K to 50K a year. The average listing sells 500 to 750 of them. At $17.38 that is $9K to $13K a year per listing.
- Average price
- $17.38inside the $15 to $100 sweet spot
- Price range
- $4.37–$53.36
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 40K–50K
- Units per listing a year
- 500–750
- Revenue per listing a year
- $9K–$13K
- Returns
- 2.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
89% of listings pay for placement with sponsored ads. 98% ship with Prime. On an average day, 1.2% of listings are out of stock. The average listing ranks #1,234 within Party Packs. It carries 375 reviews at 4.62 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 89%
- Prime listings
- 98%
- Out of stock, average day
- 1.2%
- Average rank
- #1,234in Party Packs
- Average rating
- 4.62 starsAmazon United States average 4.42 stars
- Average reviews
- 375per listing
- Listings tracked
- 57
04 · Newcomers
7 of last year's 19 launches cleared the first-year sales bar.
19 products launched here in the last 12 months. 7 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 31 months on average, so a newcomer is not facing entrenched names.
- Launched, last 12 months
- 19
- Successful launches
- 7Amazon's first-year sales bar
- Average brand age
- 31 months
Products
Top Lego Birthday Party Supplies 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 23, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
173 PCS Building Block Birthday Party Decorations - Plates Napkins Cups Cutlery Cake & Cupcake Toppers Banner Hanging Swirls Tablecloth Balloons for Birthday Party Serves 20
- Price
- $23.56
- Rating
- 4.7/5
- Reviews
- 422
- Age
- 1y ago

PHD CAKE Number 7 Building Block Birthday Cake Candle Numeral Birthday Candles
- Price
- $5.95
- Rating
- 4.8/5
- Reviews
- 320
- Age
- 2y ago

LEGO Birthday Party Cake - Building Toy for Boys & Girls Ages 7+ - Birthday Decoration with 10 Candle Accessories - Craft for Kids - 40815
- Price
- $14.86
- Rating
- 5.0/5
- Reviews
- 35
- Age
- 1mo ago

197 Pcs Building Blocks Birthday Paper Plates Tableware Set (Serves 24) Colorful Blocks Supplies Include Banner Pendant Plates Napkins Cups Forks Knives Tablecloth Topper Balloons For Kids Party
- Price
- $27.40
- Rating
- 4.6/5
- Reviews
- 48
- Age
- 11mo ago

Rossesay Building Block Number 0-9 Birthday Cake Candle Numeral Birthday Sparkler Candles for Building Block Cake Topper for Party Decorations Supplies(Number 5)
- Price
- $6.88
- Rating
- 4.5/5
- Reviews
- 845
- Age
- 2y ago
Trending
estimated 90-day click momentum
NKPDAXM Building Block Birthday Decorations Colorful Building Block Plates Napkins Cups Tablecloth Banner Hanging Swirls Balloons Honeycomb Centerpieces for Block Birthday Party Serves 24
- Price
- $20.86
- Rating
- 4.6/5
- Reviews
- 59
- Age
- 4mo ago

224Pcs Building Block Birthday Decorations ALL-IN-1 Serves 26
- Price
- $25.12
- Rating
- 4.9/5
- Reviews
- 12
- Age
- 4mo ago

Building Block Birthday Party Decorations Includes Cake Toppers Banner Hanging Swirls Tablecloths Balloons for Building Block Party Decorations
- Price
- $16.93
- Rating
- 4.5/5
- Reviews
- 18
- Age
- 7mo ago

Building Block Birthday Party Supplies Colorful Building Block Plates Napkins Cups Tablecloth Banner Hanging Swirls Balloons Honeycomb Centerpieces for Birthday Party Serves 24
- Price
- $19.85
- Rating
- 4.8/5
- Reviews
- 9
- Age
- 6mo ago

LEGO Birthday Party Cake - Building Toy for Boys & Girls Ages 7+ - Birthday Decoration with 10 Candle Accessories - Craft for Kids - 40815
- Price
- $14.86
- Rating
- 5.0/5
- Reviews
- 35
- Age
- 1mo ago
Newest
by launch date
LEGO Birthday Party Cake - Building Toy for Boys & Girls Ages 7+ - Birthday Decoration with 10 Candle Accessories - Craft for Kids - 40815
- Price
- $14.86
- Rating
- 5.0/5
- Reviews
- 35
- Age
- 1mo ago

NKPDAXM Building Block Birthday Decorations Colorful Building Block Plates Napkins Cups Tablecloth Banner Hanging Swirls Balloons Honeycomb Centerpieces for Block Birthday Party Serves 24
- Price
- $20.86
- Rating
- 4.6/5
- Reviews
- 59
- Age
- 4mo ago

224Pcs Building Block Birthday Decorations ALL-IN-1 Serves 26
- Price
- $25.12
- Rating
- 4.9/5
- Reviews
- 12
- Age
- 4mo ago

198Pcs Building Block Birthday Party Decorations with Plates Napkins Cups Banner Backdrop Tablecloth Balloons Cake Toppers Honeycombs for Boys Kids Birthday Party Supplies Serve 24 Guests
- Price
- $26.33
- Rating
- 4.9/5
- Reviews
- 10
- Age
- 5mo ago

Building Block Birthday Party Supplies Colorful Building Block Plates Napkins Cups Tablecloth Banner Hanging Swirls Balloons Honeycomb Centerpieces for Birthday Party Serves 24
- Price
- $19.85
- Rating
- 4.8/5
- Reviews
- 9
- Age
- 6mo ago
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.
Brands
44 falling
Sellers
130
Est. top-5 brand share
35%
Top 20: 75%
Est. top-5 click share
27%
Top 20: 63%
Open market
61%
- LEGO11%
- QIYANPAX10%
- PHD CAKE6%
- LINHAXM5%
- Kinovo4%
- Rossesay4%
Demand
Lego Birthday Party Supplies search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan · busiest ÷ quietest = 1.9×
Search terms
Top Lego Birthday Party Supplies search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- lego birthday decorations303K/yr
- lego party decorations164K/yr
- lego birthday121K/yr
- lego party118K/yr
- lego decorations69K/yr
- lego themed birthday party41K/yr
- lego party supplies48K/yr
- lego birthday party30K/yr
- lego decorations for birthday party29K/yr
- birthday lego30K/yr
Reviews and returns
What reviews say buyers love and hate about Lego Birthday Party Supplies
We read the reviews and the return reasons for every product selling here.
“Very small”
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.
18 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Lego Birthday Party Supplies 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









