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51

dji action 4 case

Worth a look

Shows a sweet-spot price point ($20.66 avg), but a small market ($71K/yr) keeps it on the watch list.

Market size 18Growth 57Conversion 37Competition 59Returns 28Price range 84Avg price 89Brand share 84Review moat 86Quality gap 30

Avg price

Great$20.66

avg listing price — sweet spot $15–$100

Review moat

Great280.48

avg incumbent reviews — the moat a new listing must climb

Brand share

Great51%

top-5 brand share — no brand owns this niche

Price range

Great$8.51–$57.53

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

Competition

Good50%

top-5 click share — leaders hold, buyers still browse

Growth

Good+31.7%

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

Conversion

Okay3.0%

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Returns

Okay4.8%

return rate — above 5% kills the launch gate

Market size

Bad$71K

$71K/yr · 116K searches

According to Flapen's Amazon United States niche tracking, dji action 4 case is a $71K/yr Amazon United States market (116K searches/yr). The top 5 brands hold 51% of demand. Demand peaks in Jun–Jul. Verdict: Worth a look — 51/100.

Data updated Jul 18, 2026 · scored weekly · How we score niches

dji action 4 case market data

Units sold / yr
4K–5K
avg 100–250/product
Revenue / yr
$83K–$103K
units × avg price
Conversion rate
3.0%
Avg BSR
#493
Page quality
0%
Prime
100%
Sponsored
97%
Out of stock
8.3%
Avg brand age
23 months
Avg seller age
194 days

Competition & brand share

The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.

Brands

23 rising

Sellers

38

Top-5 brand share

51%

Top 20: 97%

Top-5 click share

50%

Top 20: 86%

Open market

44%

  • Tomat15%
  • Flymile12%
  • Lekufee9%
  • SUREWO7%
  • DFTIM7%
  • CYNOVA5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +31.7% search growth over the last 90 days.
4K3KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jun, Jul · busiest ÷ quietest = 1.9×

Top dji action 4 case search terms

  • dji action 5 pro case28K/yr
  • dji osmo action 5 pro case22K/yr
  • dji action 4 case15K/yr
  • dji osmo action 4 case12K/yr
  • dji action 5 case9K/yr
  • action 5 pro case9K/yr
  • osmo action 4 case5K/yr
  • osmo action 5 pro case7K/yr
  • dji osmo action 5 case5K/yr
  • dji osmo action case4K/yr
All search terms

Top dji action 4 case 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%4%$3K8%$6K12%$9K16%$11K101001K10K 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 dji action 4 case

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

What buyers love

Size-Overall18%

“It's a snug fit”

Quality-Overall11%

“Really like the quality of this feels like a great quality case”

Drop/Impact Protection7%

“Good protection”

Strength6%

“Seems sturdy”

Value For Money5%

“worth it”

Water Resistance5%

“the waterproofing appears adequate —”

Durability5%

“It is very durable material”

Ease Of Use5%

“Its pretty easy to use”

Advertised Vs Actual Product3%

“Worked as advertised”

Material Quality3%

“It is very durable material”

What buyers complain about

Size-Overall13%

“a little too small”

Durability5%

“the screw hole broke within the first use”

Lenses5%

“it can potentially damage the lens”

Material Quality3%

“Initially, I didn't quite like the shiny exterior plastic(?) material”

Product Condition3%

“Not new, box opened and parts missing”

Water Resistance3%

“Doesnt fit waterproof case as advertised on photos”

Compatibility-Overall3%

“Doesn't fit an action 6”

Advertised Vs Actual Product3%

“They should not advertise it as such”

Mounting3%

“doesn't offer much beyond the cold shoe mounts”

Value For Money2%

“This is maybe worse five bucks”

Top return reasons

Size-Overall52%
Compatibility-Overall9%
Advertised Vs Actual Product7%
Value For Money4%
Weight Heavy3%
Add-Ons/Attachments3%
Quality-Overall3%
Functionality-Overall2%
Defective Material/Parts2%
Water Resistance2%

Common questions

Is dji action 4 case profitable to sell on Amazon United States?
The niche generates $71K/yr across 33 tracked products. 0 of 7 products launched in the last 360 days are still selling. 90-day search growth is +31.7%. Flapen's verdict: Worth a look (51/100).
How competitive is the dji action 4 case niche?
23 brands and 38 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 51% of demand.
What do buyers complain about in dji action 4 case?
Top complaints mined from reviews: Size-Overall, Durability, Lenses. The return rate is 4.8%.
When does demand for dji action 4 case peak?
Demand peaks in Jun–Jul; the busiest month runs 1.9× the quietest.
What does it cost to enter the dji action 4 case niche?
Listings span $8.51–$57.53; the average listing price is $20.66 (sweet spot $15–$100). The average incumbent carries 280 reviews — the moat a new listing must climb.