Is galaxy s21 screen protector profitable to sell on Amazon United States?

The niche generates $330K/yr across 8 tracked products. 90-day search growth is +1.8%. Flapen's verdict: Skip it (39/100).

How competitive is the galaxy s21 screen protector niche?

7 brands and 11 sellers compete. The top 5 products take 87% of clicks and top 5 brands hold 90% of demand.

What do buyers complain about in galaxy s21 screen protector?

Top complaints mined from reviews: Size-Overall, Durability, Compatibility-Overall. The return rate is 2.7%.

When does demand for galaxy s21 screen protector peak?

Demand peaks in Jul; the busiest month runs 1.8× the quietest.

What does it cost to enter the galaxy s21 screen protector niche?

Listings span $4.84–$13.10; the average listing price is $8.51 (sweet spot $15–$100). The average incumbent carries 27,862 reviews — the moat a new listing must climb.

galaxy s21 screen protector

Skip it

Prices mostly outside the sweet spot ($4.84–$13.10) — this niche doesn't clear our bar today.

Conversion

Incredible16.3%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Returns

Good2.7%

return rate — above 5% kills the launch gate

Market size

Good$330K

$330K/yr · 238K searches

Growth

Okay+1.8%

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

Brand share

Okay90%

top-5 brand share — brands hold most of the demand

Avg price

Bad$8.51

avg listing price — sweet spot $15–$100

Review moat

Bad27,862.38

avg incumbent reviews — the moat a new listing must climb

Competition

Bad87%

top-5 click share — a locked-up shelf

Price range

Bad$4.84–$13.10

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

According to Flapen's Amazon United States niche tracking, galaxy s21 screen protector is a $330K/yr Amazon United States market (238K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Jul. Verdict: Skip it — 39/100.

Data updated Jul 6, 2026 · scored weekly · How we score niches

galaxy s21 screen protector market data

Units sold / yr: 40K–50K; avg 5,000–6,000/product
Revenue / yr: $340K–$426K; units × avg price
Conversion rate: 16.3%
Avg BSR: #248
Page quality: 0%
Prime: 100%
Sponsored: 75%
Out of stock: 0.0%
Avg brand age: 35 months
Avg seller age: 194 days

Competition & brand share

The top 5 products capture 87% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 falling

Sellers

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

87%

Top 20: 100%

Open market

NEW'C42%
BIGFACE13%
Supershieldz13%
JETech12%
Heenjer10%
iCsapr8%
Open — no brand owns it (1 brand, 2%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +1.8% search growth over the last 90 days.

Peak months: Jul · busiest ÷ quietest = 1.8×

Open Trend

Top galaxy s21 screen protector search terms

s21 screen protector56K/yr -2.1%14.1% conv.
galaxy s21 screen protector43K/yr -3.5%16.1% conv.
samsung s21 screen protector39K/yr +7.3%12.9% conv.
samsung galaxy s21 screen protector32K/yr +0.7%12.7% conv.
galaxy s21 5g screen protector17K/yr +25.8%12.9% conv.
samsung galaxy s21 5g screen protector9K/yr +11.8%12.0% conv.
s21 5g screen protector9K/yr -5.1%13.5% conv.
screen protector samsung s217K/yr +7.5%10.7% conv.
screen protector s216K/yr -14.0%13.2% conv.
samsung s21 5g screen protector5K/yr -11.0%12.1% conv.

All search terms

Top galaxy s21 screen protector 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 8 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

NEWC 3 Pack Designed for Samsung Galaxy S21 5G (6.2) Screen Protector Tempered Glass Scratch-Proof Bubble-Free Ultra Resistant (0.26 mm HD Ultra Transparent) 9H Hardness Glass

NEW'C$7.204.5★107,371 rev

Galaxy S21 Tempered Glass Screen Protector + Camera Lens Protector [ 2 + 2 Pack ][Case Friendly] [Anti-Scratch] [Ultrasonic Fingerprint Unlock] Clear HD Glass Protective Film for Samsung Galaxy S21

BIGFACE$13.104.3★5,556 rev

(3 Pack) Supershieldz Designed for Samsung Galaxy S21 5G Tempered Glass Screen Protector Anti Scratch Bubble Free

Supershieldz$8.354.4★31,924 rev

Heenjer 2 Pack for Samsung Galaxy S21 5G / SM-g991u Screen Protector Tempered-Glass Micro-curved Edges Case Friendly Bubble Free HD Clear Easy Installation

Heenjer$4.844.4★657 rev

JETech Screen Protector for Samsung Galaxy S21 5G 6.2-Inch Tempered Glass Film with Easy Installation Tool Fingerprint ID Compatible HD Clear 3-Pack

JETech$7.764.5★34,147 rev

Newest

by launch date

Heenjer 2 Pack for Samsung Galaxy S21 5G / SM-g991u Screen Protector Tempered-Glass Micro-curved Edges Case Friendly Bubble Free HD Clear Easy Installation

Heenjer$4.84657 rev

1y ago

iCsapr 4 Pack Glass Screen Protector Compatible for Samsung Galaxy S21 5G / SM-g991u [9H Hardness]-HD Screen Tempered Glass Scratch Resistant Easy Install [Case Friendly]

iCsapr$6.951,917 rev

1y ago

JETech Screen Protector for Samsung Galaxy S21 5G 6.2-Inch Tempered Glass Film with Easy Installation Tool Fingerprint ID Compatible HD Clear 3-Pack

JETech$7.7634,147 rev

2y ago

JETech Screen Protector for Samsung Galaxy S21 6.2-Inch with Camera Lens Protector Easy Installation Tool Tempered Glass Film HD Clear 2-Pack Each

JETech$9.9927,208 rev

3y ago

NEWC 3 Pack Designed for Samsung Galaxy S21 5G (6.2) Screen Protector Tempered Glass Scratch-Proof Bubble-Free Ultra Resistant (0.26 mm HD Ultra Transparent) 9H Hardness Glass

NEW'C$7.20107,371 rev

4y ago

What buyers say about galaxy s21 screen protector

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

What buyers love

Size-Overall19%

“Fit well”

Assembly/Installation14%

“Easy to put on”

Quality-Overall14%

“Great product, just what I needed”

Drop/Impact Protection10%

“Screen protector”

Ease Of Use8%

“Easy to understand and use”

Value For Money6%

“reasonable price”

Advertised Vs Actual Product5%

“Better than expected”

Durability4%

“Very Durable”

Efficiency3%

“Works well”

Strength2%

“Sturdy, easy to install”

What buyers complain about

Size-Overall30%

“To small”

Durability11%

“First one broke during application”

Compatibility-Overall6%

“Does not fit the S24”

Advertised Vs Actual Product4%

“False advertising”

Functionality-Overall4%

“It does not work”

Instructions/User Manual/Troubleshooting4%

“Also the guide to apply the glass was not what I expected”

Ease Of Use3%

“It would have been a very difficult job otherwise”

Display-Overall3%

“Doesn't quite cover the whole screen”

Value For Money2%

“is not worth it”

Quality-Overall1%

“The product is just cheap”

Top return reasons

Size-Overall78%

Compatibility-Overall9%

Functionality-Overall3%

Advertised Vs Actual Product3%

Adhesion/Stickiness2%

Length1%

Value For Money1%

Display-Overall1%

Touch Screen1%

Defective Material/Parts1%

Common questions

Is galaxy s21 screen protector profitable to sell on Amazon United States?: The niche generates $330K/yr across 8 tracked products. 90-day search growth is +1.8%. Flapen's verdict: Skip it (39/100).
How competitive is the galaxy s21 screen protector niche?: 7 brands and 11 sellers compete. The top 5 products take 87% of clicks and top 5 brands hold 90% of demand.
What do buyers complain about in galaxy s21 screen protector?: Top complaints mined from reviews: Size-Overall, Durability, Compatibility-Overall. The return rate is 2.7%.
When does demand for galaxy s21 screen protector peak?: Demand peaks in Jul; the busiest month runs 1.8× the quietest.
What does it cost to enter the galaxy s21 screen protector niche?: Listings span $4.84–$13.10; the average listing price is $8.51 (sweet spot $15–$100). The average incumbent carries 27,862 reviews — the moat a new listing must climb.