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Hollow Blocks

Fail

Shoppers spend an estimated $12K a year here, so Hollow Blocks is a Fail.

Flapen Score
35
35 / 100
Ranks 2,644 of 3,143 Toys & Games niches · −11 vs the category median of 46
Market size
$12K/yr7K searches / yr
90-day growth
-12.7%search demand this quarter
Competition
78%top-5 click share · 9 brands · 20 sellers

Flapen Score

Hollow Blocks against its category

The dotted line is the Toys & Games average. Past it, Hollow Blocks is stronger. Inside it, weaker.

35Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Hollow Blocks market on Amazon at a glance

Shoppers on Amazon United States searched for Hollow Blocks 7K times last year and spent an estimated $12K. The top 5 brands take 81% of clicks. Demand peaks in Nov–Dec. Flapen scores it 35 out of 100, a Fail.

01 · Demand

An estimated 1.8% of those searches ended in a purchase.

Shoppers searched for this 7K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 1.8% of those searches ended in a purchase. Searches in the last 90 days moved -12.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $12K a year.

Searches, last 12 months
7K
Growth, 90 days vs prior 90
-12.7%
Conversion, latest week
1.8%
Market size, estimated
$12Ka year
Peak month
November2.6× the quietest month
Top search term
hollow blocks5K searches a year

02 · Price

A sale here is worth $97.72.

Listings sell for $97.72 on average, from $29.97 to $181.68. Amazon reports units sold in ranges. This niche sold 100 to 250 a year. The average listing sells 0 to 100 of them. At $97.72 that is $0 to $10K a year per listing.

Average price
$97.72inside the $15 to $100 sweet spot
Price range
$29.97–$181.68
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
100–250
Units per listing a year
0–100
Revenue per listing a year
$0–$10K
Returns
1.7%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is low.

70% of listings pay for placement with sponsored ads. 70% ship with Prime. On an average day, 3.9% of listings are out of stock. The average listing ranks #479 within Stacking Blocks. It carries 260 reviews at 4.49 stars, so a new listing needs social proof before a better product.

Sponsored listings
70%
Prime listings
70%
Out of stock, average day
3.9%
Average rank
#479in Stacking Blocks
Average rating
4.49 starsAmazon United States average 4.42 stars
Average reviews
260per listing
Listings tracked
10

04 · Newcomers

1 of last year's 1 launches cleared the first-year sales bar.

1 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 63 months on average, so the names here are established.

Launched, last 12 months
1
Successful launches
1Amazon's first-year sales bar
Average brand age
63 months

Products

Top Hollow Blocks products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Sign in to see the products

The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone.

Competition

Competition: brands, sellers & click share

The top 5 products take 78% of clicks. A locked shelf that new listings rarely crack.

Brands

9 rising

Sellers

20

Top-5 brand share

81%

Top 20: 100%

Top-5 click share

78%

Top 20: 100%

Open market

13%

  • Brand 126%
  • Brand 224%
  • Brand 314%
  • Brand 410%
  • Brand 56%
  • Brand 66%
  • Open — no brand owns it (3 brands, 13%)

Demand

Hollow Blocks search demand

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

400300Spike '25Prime Day '25Black Friday '25Spike '26FebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJunJul

Peak months: Nov, Dec · busiest ÷ quietest = 2.6×

Search terms

Top Hollow Blocks search terms shoppers use

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

  • hollow blocks5K/yr
  • hollow blocks for preschoolers1K/yr
  • large hollow blocks607/yr
  • hollow block set301/yr

Reviews and returns

What reviews say buyers love and hate about Hollow Blocks

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

14%of positive reviews mention “Quality-Overall”
24%of negative reviews mention “Assembly/Installation”
1.7%of orders come back
“hard to put together”
A buyer, on “Assembly/Installation”24% 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.

15 topics

NegativePositive

FAQ

Common Hollow Blocks questions

Answered from the same tracked data.