Skip to content

S21 Ultra Case

Fail

Demand is soft, at -17.2% this quarter, so S21 Ultra Case is a Fail.

Flapen Score
48
48 / 100
Top 31% of 1,488 Electronics & Photo niches · +4 vs the category median of 44
Market size
£82K/yr243K searches / yr
90-day growth
-17.2%search demand this quarter
Competition
36%top-5 click share · 38 brands · 47 sellers

Flapen Score

S21 Ultra Case against its category

The dotted line is the Electronics & Photo average. Past it, S21 Ultra Case is stronger. Inside it, weaker.

48Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The S21 Ultra Case market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for S21 Ultra Case 243K times last year and spent an estimated £82K. The top 5 brands take 37% of clicks. Demand peaks in Sep. Flapen scores it 48 out of 100, a Fail.

01 · Demand

An estimated 3.8% of those searches ended in a purchase.

Shoppers searched for this 243K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 3.8% of those searches ended in a purchase. Searches in the last 90 days moved -17.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated £82K a year.

Searches, last 12 months
243K
Growth, 90 days vs prior 90
-17.2%
Conversion, latest week
3.8%
Market size, estimated
£82Ka year
Peak month
September1.8× the quietest month
Top search term
samsung s21 ultra case85K searches a year

02 · Price

A sale here is worth £8.96.

Listings sell for £8.96 on average, from £3.09 to £17.23. Amazon reports units sold in ranges. This niche sold 6K to 8K a year. The average listing sells 100 to 250 of them. At £8.96 that is £896 to £2K a year per listing.

Average price
£8.96under the $15 to $100 sweet spot
Price range
£3.09–£17.23
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
6K–8K
Units per listing a year
100–250
Revenue per listing a year
£896–£2K
Returns
2.9%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

82% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 6.3% of listings are out of stock. The average listing ranks #3,057 within Cases & Covers. It carries 2,851 reviews at 4.33 stars, so a new listing needs social proof before a better product.

Sponsored listings
82%
Prime listings
100%
Out of stock, average day
6.3%
Average rank
#3,057in Cases & Covers
Average rating
4.33 starsAmazon United Kingdom average 4.36 stars
Average reviews
2,851per listing
Listings tracked
45

04 · Newcomers

0 of last year's 5 launches cleared the first-year sales bar.

5 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 38 months on average, so the names here are settling in.

Launched, last 12 months
5
Successful launches
0Amazon's first-year sales bar
Average brand age
38 months

Products

Top S21 Ultra Case 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 25, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 36% of clicks, no more. An open shelf where new products get seen.

£0£2K£5K£7K£10K1101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

38 falling

Sellers

47

Est. top-5 brand share

37%

Top 20: 86%

Est. top-5 click share

36%

Top 20: 80%

Open market

57%

  • imluckies9%
  • HikerClub8%
  • Dexnor7%
  • GiiYoon7%
  • Spigen6%
  • KaiMai6%

Demand

S21 Ultra Case search demand

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

12K8KSpike '24SepDecMarJunAugNovMarMay

Peak months: Sep · busiest ÷ quietest = 1.8×

Search terms

Top S21 Ultra Case search terms shoppers use

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

  • samsung s21 ultra case85K/yr
  • s21 ultra phone case79K/yr
  • samsung galaxy s21 ultra case26K/yr
  • s21 ultra case20K/yr
  • galaxy s21 ultra case12K/yr
  • samsung galaxy s21 ultra 5g case10K/yr
  • samsung s21 ultra phone case10K/yr

Reviews and returns

What reviews say buyers love and hate about S21 Ultra Case

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

23%of positive reviews mention “Quality-Overall”
11%of negative reviews mention “Size-Overall”
2.9%of orders come back
“It Does Not Fit The Phone”
A buyer, on “Size-Overall”11% 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.

18 topics

NegativePositive

FAQ

Common S21 Ultra Case 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