128gb micro sd card
Worth a lookShows a $6.6M/yr market, but a deep review moat (45,594 avg reviews) keeps it on the watch list.
Market size
Incredible£6.6M£6.6M/yr · 6.3M searches
Returns
Great1.3%return rate — above 5% kills the launch gate
Conversion
Great7.1%search→purchase rate — share of searches ending in a sale
Avg price
Good£14.79avg listing price — sweet spot $15–$100
Price range
Good£7.52–£31.94cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good54%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-4.0%90-day search growth — must beat 0% to launch
Brand share
Bad91%top-5 brand share — brand-locked demand
Review moat
Bad45,593.84avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United Kingdom niche tracking, 128gb micro sd card is a £6.6M/yr Amazon United Kingdom market (6.3M searches/yr). The top 5 brands hold 91% of demand. Verdict: Worth a look — 55/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
128gb micro sd card market data
- Units sold / yr
- 400K–500K
- avg 25,000–30,000/product
- Revenue / yr
- £5.9M–£7.4M
- units × avg price
- Conversion rate
- 7.1%
- Avg BSR
- #6
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 88%
- Out of stock
- 0.0%
- Avg brand age
- 45 months
- Avg seller age
- 173 days
Competition & brand share
The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.Brands
10 rising
Sellers
184
Top-5 brand share
91%
Top 20: 100%
Top-5 click share
54%
Top 20: 94%
Open market
7%
- SanDisk64%
- KOOTION15%
- Amazon Basics6%
- Lexar3%
- KEXIN3%
- KODAK2%
- Open — no brand owns it (4 brands, 7%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -4.0% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.6×
Top 128gb micro sd card search terms
- micro sd card2.2M/yr
- sd card1.8M/yr
- memory card334K/yr
- 128gb micro sd card288K/yr
- micro sd card 128gb223K/yr
- micro sd216K/yr
- sd cards169K/yr
- sd card micro 128gb105K/yr
- sandisk micro sd card145K/yr
- 128gb sd card110K/yr
Top 128gb micro sd card 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
SanDisk 128GB Ultra microSDXC card + SD adapter Memory card Full HD up to 140 MB/s For smartphones and Tablets with A1 App Performance UHS-I Class 10 U1
SanDisk£13.254.6★175,040 rev
KOOTION 64GB Micro SD Card UHD Video for GoPro Action Camera Drone Smartphone R/W up to 80/20MB/s MicroSDXC Memory Card UHS-I U1 Class 10
KOOTION£8.984.4★10,243 rev
SanDisk 256GB Ultra microSDXC card + SD adapter Memory card Full HD up to 150 MB/s For smartphones and Tablets with A1 App Performance UHS-I Class 10 U1
SanDisk£21.914.6★175,040 rev
SanDisk 128GB Extreme PRO SDXC card SD Card V30 Memory Card 4K UHD up to 200 MB/s SanDisk QuickFlow Technology RescuePro Deluxe Data Recovery Software UHS-I Class 10 U3 V30
SanDisk£24.754.7★95,962 rev
SANDISK Ultra SDXC Card 64GB
SanDisk£12.654.6★8,442 rev
Newest
by launch date
KEXIN Micro SD Card 16GB MicroSDHC UHS-I Class 10 A1 U1 Mini SD Card Memory Card for Smartphone Tablet Camera
KEXIN£7.526,408 rev
Biwin MS100 Micro SDXC Card 32GB MicroSD UHS-I Memory Card A1 V10 U1 Class 10 Up to 100 MB/s Read Speeds for Smartphones Tablets Home Security Camera and Dash Cams
BIWIN£8.88572 rev
SANDISK Ultra Go micro SDXC card 128GB + SD adapter (For Android Smartphones and Tablets Memory card up to 150 MB/s Full HD Video V10 A1 Faster App Performance UHS-I Class 10 U1) For Amazon
SanDisk£13.401,313 rev
SANDISK Extreme Go micro SDXC card 128GB + SD adapter (For Android Devices Gaming Consoles Drones Action Cams UHS-I up to 200 MB/s V30 5K 4K UHD Rescue PRO Class 10 U3) For Amazon
SanDisk£17.60101,677 rev
32GB/64GB/128GB Micro Memory Card High Speed Class 10 TF Card 10M/s for Digital Cameras Mobile Phones GPS MP3 Players PDAS Tablets etc (128GB)
Annadue£14.86518 rev
Trending
90-day click momentumKEXIN Micro SD Card 16GB MicroSDHC UHS-I Class 10 A1 U1 Mini SD Card Memory Card for Smartphone Tablet Camera
KEXIN£7.524.4★
Biwin MS100 Micro SDXC Card 32GB MicroSD UHS-I Memory Card A1 V10 U1 Class 10 Up to 100 MB/s Read Speeds for Smartphones Tablets Home Security Camera and Dash Cams
BIWIN£8.884.6★
SanDisk 64GB Extreme PRO SDXC card SD Card V30 Memory Card 4K UHD up to 200 MB/s SanDisk QuickFlow Technology RescuePro Deluxe Data Recovery Software UHS-I Class 10 U3 V30
SanDisk£17.924.7★
32GB/64GB/128GB Micro Memory Card High Speed Class 10 TF Card 10M/s for Digital Cameras Mobile Phones GPS MP3 Players PDAS Tablets etc (128GB)
Annadue£14.863.9★
Kodak Premiun SDHC 32GB Class10 U1 packaging may vary
KODAK£10.914.5★
What buyers say about 128gb micro sd card
What buyers praise and complain about, mined from review topics.What buyers love
“Great value for money”
“good quality card”
“As advertised”
“Good storage”
“great compatibility”
“Perfect, camera works so much better now”
“Transfer speed was reliably high”
“Always reliable”
“Excellent size”
“Very easy to use”
What buyers complain about
“Broke after 1 week”
“no longer works”
“Low quality”
“Did not work on multiple devices, requested replacement”
“Although not the cheapest option”
“Not fit for purpose”
“Very slow speed”
“Slow data transfer speed”
“Only suitable for storage”
“Corrupt after 1 month use in security camera”
Top return reasons
Common questions
- Is 128gb micro sd card profitable to sell on Amazon United Kingdom?
- The niche generates £6.6M/yr across 25 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -4.0%. Flapen's verdict: Worth a look (55/100).
- How competitive is the 128gb micro sd card niche?
- 10 brands and 184 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 91% of demand.
- What do buyers complain about in 128gb micro sd card?
- Top complaints mined from reviews: Durability, Functionality-Overall, Quality-Overall. The return rate is 1.3%.
- When does demand for 128gb micro sd card peak?
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- What does it cost to enter the 128gb micro sd card niche?
- Listings span £7.52–£31.94; the average listing price is £14.79 (sweet spot $15–$100). The average incumbent carries 45,594 reviews — the moat a new listing must climb.