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samsung galaxy s21 ultra case wallet

Skip it

A small market ($29K/yr) — this niche doesn't clear our bar today.

Market size 7Growth 17Conversion 38Competition 82Returns 33Price range 65Avg price 78Brand share 95Review moat 24Quality gap 58

Brand share

Great40%

top-5 brand share — no brand owns this niche

Competition

Great33%

top-5 click share — an open shelf

Avg price

Great$16.11

avg listing price — sweet spot $15–$100

Price range

Good$7.80–$28.27

cheapest to priciest tracked listing — scored on the share inside $15–$100

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Conversion

Okay3.0%

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

Returns

Okay4.3%

return rate — above 5% kills the launch gate

Review moat

Bad6,091.83

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-15.5%

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

Market size

Bad$29K

$29K/yr · 60K searches

According to Flapen's Amazon United States niche tracking, samsung galaxy s21 ultra case wallet is a $29K/yr Amazon United States market (60K searches/yr). The top 5 brands hold 40% of demand. Demand peaks in Jul. Verdict: Skip it — 47/100.

Data updated Jul 8, 2026 · scored weekly · How we score niches

samsung galaxy s21 ultra case wallet market data

Units sold / yr
1K–1K
avg 0–100/product
Revenue / yr
$16K–$20K
units × avg price
Conversion rate
3.0%
Avg BSR
#5,366
Page quality
0%
Prime
98%
Sponsored
77%
Out of stock
9.8%
Avg brand age
34 months
Avg seller age
185 days

Competition & brand share

Clicks spread well past the top 5 (33% combined) — an open shelf where new products get seen.

Brands

42 falling

Sellers

56

Top-5 brand share

40%

Top 20: 82%

Top-5 click share

33%

Top 20: 64%

Open market

55%

  • Nvollnoe11%
  • Vofolen8%
  • Spigen8%
  • SUANPOT7%
  • ONETOP7%
  • iCoverCase5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -15.5% search growth over the last 90 days.
4K3KPrime Day '25Black Friday '25SepDecMarJunAugNovMarMay

Peak months: Jul · busiest ÷ quietest = 1.8×

Top samsung galaxy s21 ultra case wallet search terms

  • s21 ultra phone case wallet10K/yr
  • samsung galaxy s21 ultra case wallet6K/yr
  • samsung galaxy s21 ultra wallet case6K/yr
  • spigen s21 ultra case5K/yr
  • galaxy s21 ultra case wallet5K/yr
  • samsung s21 ultra case wallet5K/yr
  • samsung s21 ultra wallet case5K/yr
  • s21 ultra wallet case5K/yr
  • galaxy s21 ultra wallet case4K/yr
  • samsung galaxy s21 ultra case with card holder2K/yr
All search terms

Top samsung galaxy s21 ultra case wallet 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.

0%3%$8716%$2K9%$3K12%$3K101001K10K100K1.0M Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

What buyers say about samsung galaxy s21 ultra case wallet

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

What buyers love

Size-Overall20%

“Fits perfectly”

Quality-Overall14%

“excellent long lasting quality”

Strength8%

“Solid Case”

Value For Money8%

“Worth buying”

Durability5%

“So attractive and durable”

Advertised Vs Actual Product5%

“As Advertised”

Color5%

“Great phone case with lovely color”

Drop/Impact Protection3%

“but the case itself is quite protective”

Material Quality3%

“The material of this phone case is made well”

Design-Overall3%

“quality and design, it's great”

What buyers complain about

Durability23%

“Broke”

Charging9%

“It's difficult to get it to charge when docked”

Size-Overall8%

“Too large”

Product Condition6%

“Used item sent”

Touch/Button Controls5%

“Buttons dont line up after a few months”

Quality-Overall5%

“The build quality is abysmal”

Grip5%

“Not grippy”

Magnetic Strength/Adsorption3%

“Don't buy this case of you want a case with a magnet receiver”

Material Quality2%

“Material is not rubbery so be careful”

Functionality-Overall2%

“Does not work”

Top return reasons

Size-Overall53%
Compatibility-Overall9%
Advertised Vs Actual Product4%
Magnetic Strength/Adsorption3%
Grip3%
Charging3%
Color2%
Material Quality2%
Product Condition2%
Functionality-Overall2%

Common questions

Is samsung galaxy s21 ultra case wallet profitable to sell on Amazon United States?
The niche generates $29K/yr across 64 tracked products. 0 of 7 products launched in the last 360 days are still selling. 90-day search growth is -15.5%. Flapen's verdict: Skip it (47/100).
How competitive is the samsung galaxy s21 ultra case wallet niche?
42 brands and 56 sellers compete. The top 5 products take 33% of clicks and top 5 brands hold 40% of demand.
What do buyers complain about in samsung galaxy s21 ultra case wallet?
Top complaints mined from reviews: Durability, Charging, Size-Overall. The return rate is 4.3%.
When does demand for samsung galaxy s21 ultra case wallet peak?
Demand peaks in Jul; the busiest month runs 1.8× the quietest.
What does it cost to enter the samsung galaxy s21 ultra case wallet niche?
Listings span $7.80–$28.27; the average listing price is $16.11 (sweet spot $15–$100). The average incumbent carries 6,092 reviews — the moat a new listing must climb.