---
title: "4gb Sd Card — $347K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/electronics/4gb-sd-card"
last_updated: "2026-08-11T02:16:10.505Z"
locale: en
meta:
description: "Niche score 50/100 · $347K/yr market · 201K searches/yr. A concentrated shelf (top 5 take 75% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 50/100 · $347K/yr market · 201K searches/yr. A concentrated shelf (top 5 take 75% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "4gb Sd Card — $347K/yr Amazon US Niche (2026) - Flapen"
---
# **4gb sd card**
**Worth a look**
Shows searches that convert (10.8% search→purchase), but a concentrated shelf (top 5 take 75% of clicks) keeps it on the watch list.
Market size 53Growth 49Conversion 90Competition 20Returns 86Price range 74Avg price 77Brand share 25Review moat 25Quality gap 27
**Conversion**
**Great****10.8%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****1.5%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$15.92**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$9.08–$31.47**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$347K**
$347K/yr · 201K searches
**Growth**
**Okay****+19.1%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Bad****90%**
top-5 brand share — brand-locked demand
**Review moat**
**Bad****4,696.21**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****75%**
top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, 4gb sd card is a $347K/yr Amazon United States market (201K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Jul. Verdict: Worth a look — 50/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **4gb sd card market data**
- **Units sold / yr**
- **20K–25K**
- avg 1,000–1,250/product
- **Revenue / yr**
- **$318K–$398K**
- units × avg price
- **Conversion rate**
- **10.8%**
- **Avg BSR**
- **#72**
- **Page quality**
- **0%**
- **Prime**
- **86%**
- **Sponsored**
- **79%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **73 months**
- **Avg seller age**
- **189 days**
## **Competition & brand share**
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**9 **▼falling
**Sellers**
**53**
**Top-5 brand share**
**90%**
Top 20: 100%
**Top-5 click share**
**75%**
Top 20: 100%
**Open market**
**7%**
- Sinobright64% - INDMEM11% - Cloudisk7% - Gigastone5% - Verbatim3% - Transcend3% - Open — no brand owns it (3 brands, 7%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +19.1% search growth over the last 90 days.
5K4KHoliday '24Prime Day '25Spike '25Spike '26Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jul · busiest ÷ quietest = 2.5×
[**Open Trend **](https://flapen.com/research/us/electronics/4gb-sd-card/trend)
## **Top 4gb sd card search terms**
- **2gb sd card**85K/yr+13.6%9.8% conv. - **4gb sd card**27K/yr+25.7%2.7% conv. - **2 gb sd card**27K/yr+15.9%11.2% conv. - **sd card 2gb**21K/yr+0.2%10.0% conv. - **sd card 4gb**12K/yr+41.9%3.1% conv. - **4 gb sd card**9K/yr+47.8%4.8% conv. - **sd card 2 gb**5K/yr+59.8%11.1% conv. - **2gb sd card for camera**3K/yr+43.9%13.0% conv. - **sandisk 2gb sd card**5K/yr+25.9%8.4% conv. - **2gb sd card sandisk**3K/yr+10.2%9.4% conv. [**All search terms **](https://flapen.com/research/us/electronics/4gb-sd-card/search-terms)
## **Top 4gb 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.
0%10%$35K20%$69K30%$104K40%$139K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 14 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**INDMEM SD Card 2GB Class 4 Flash Memory Card 2G SLC Stanard Secure Digital Cards (1PC)**Sinobright**$9.94**4.7★1,147 rev](https://www.amazon.com/dp/B0B2JYPXJP) [2**INDMEM 2 Pack SD Card 2GB Class 4 Flash Memory Card 2G SLC Stanard Secure Digital Cards (2PC)**Sinobright**$15.72**4.7★1,147 rev](https://www.amazon.com/dp/B0B2JYXYVG) [3**INDMEM 2GB SD Card 2GB Class 4 Flash Memory Card 2G SLC Standard Secure Digital Cards for Old Digital Camera and Trail Camera(1Pack)**INDMEM**$9.94**4.7★109 rev](https://www.amazon.com/dp/B0DFQ3WZMQ) [4**INDMEM 2GB SD Card 2 Pack 2GB Class 4 Flash Memory Card 2G SLC Standard Secure Digital Cards for Old Digital Camera and Trail Camera**INDMEM**$16.10**4.7★109 rev](https://www.amazon.com/dp/B0DFQ3ZCVG) [5**GIGASTONE 4GB SD Card Speed Up to 20MB/s SDHC UHS-I Class 4 Memory Card for Photo Video Music Voice File DSLR Camera DSC Camcorder Recorder Playback PC Mac POS with 1 Mini case**Gigastone**$12.29**4.6★2,597 rev](https://www.amazon.com/dp/B07KWQ8MKM)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**INDMEM SD Card 4GB SDHC Class 4 Flash Memory Card 4 GB Digital Camera Cards 1Pack**Sinobright**$10.48**189 rev7mo ago](https://www.amazon.com/dp/B0G7YS57RZ) [**INDMEM SD Card 2GB 6 Packs Class 4 2GB Flash Memory Card MLC Standard Secure Digital Cards Camera Card**READYXIO**$31.47**76 rev1y ago](https://www.amazon.com/dp/B0DXBPQ1PH) [**INDMEM 2GB SD Card 2GB Class 4 Flash Memory Card 2G SLC Standard Secure Digital Cards for Old Digital Camera and Trail Camera(1Pack)**INDMEM**$9.94**109 rev1y ago](https://www.amazon.com/dp/B0DFQ3WZMQ) [**INDMEM 2GB SD Card 2 Pack 2GB Class 4 Flash Memory Card 2G SLC Standard Secure Digital Cards for Old Digital Camera and Trail Camera**INDMEM**$16.10**109 rev1y ago](https://www.amazon.com/dp/B0DFQ3ZCVG) [**INDMEM 5 Pack SD Card 2GB Class 4 Flash Memory Card 2G SLC Stanard Secure Digital Cards**Sinobright**$26.86**94 rev4y ago](https://www.amazon.com/dp/B0B58Z6YKL)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**INDMEM SD Card 4GB SDHC Class 4 Flash Memory Card 4 GB Digital Camera Cards 1Pack**Sinobright**$10.48**4.7★**▲ 174%**](https://www.amazon.com/dp/B0G7YS57RZ) [**Cloudisk 2GB SD Card Class 4 Memory Card Standard SD (Non-HC) for GPS MP3 Players Legacy Devices can not Work with Modern 4K Cameras**Cloudisk**$12.04**4.3★**▲ 71%**](https://www.amazon.com/dp/B07RTGP42B) [**SanDisk 2GB Class 4 SD Flash Memory Card- SDSDB-002G-B35 (Label May Change)**Sandisk**$23.77**4.6★**▲ 47%**](https://www.amazon.com/dp/B000BQ7GW8) [**GIGASTONE 4GB SD Card Speed Up to 20MB/s SDHC UHS-I Class 4 Memory Card for Photo Video Music Voice File DSLR Camera DSC Camcorder Recorder Playback PC Mac POS with 1 Mini case**Gigastone**$12.29**4.6★**▲ 26%**](https://www.amazon.com/dp/B07KWQ8MKM) [**Micro SD Card 2GB Pack of 2 Flash Memory Card Class 6 with SD Adapter MicroSD TF Card (2 GB)**Cloudisk**$12.97**4.5★**▲ 25%**](https://www.amazon.com/dp/B0D2SXD82L)
**~~View all trending →~~**
## **What buyers say about 4gb sd card**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Compatibility-Overall**29%
*“It was fully compatible”*
**Camera Quality**18%
*“Great for old digital cameras”*
**Advertised Vs Actual Product**14%
*“Works as expected”*
**Storage Capacity**8%
*“Good price little storage”*
**Value For Money**7%
*“They weren't very expensive”*
**Size-Overall**5%
*“Fits”*
**Ease Of Use**5%
*“Fast and easy to use”*
**Functionality-Overall**4%
*“This memory card worked for its intended usage”*
**Durability**2%
*“It seems durable”*
**Data Transfer Speed**1%
*“Fast and easy to use”*
### **What buyers complain about **
**Functionality-Overall**26%
*“Didnt work”*
**Compatibility-Overall**17%
*“Neither card worked on any device I tried them in”*
**Size-Overall**10%
*“this card is actually a 4GB card formatted to look smaller”*
**Quality-Overall**9%
*“Cheap and work”*
**Value For Money**9%
*“I'd say it's almost too expensive for what it is”*
**Advertised Vs Actual Product**7%
*“False advertisement”*
**GPS**7%
*“just too large for my GPS”*
**Storage Capacity**7%
*“It has a fake memory storage of 2gb, in fact, it has 3.69 GB”*
### **Top return reasons **
**Size-Overall**32%
**Compatibility-Overall**30%
**Functionality-Overall**15%
**Value For Money**6%
**Camera Quality**6%
**Advertised Vs Actual Product**3%
**Storage Capacity**2%
**Defective Material/Parts**2%
**Product Condition**1%
**Computation Performance**1%
## **Common questions**
- **Is 4gb sd card profitable to sell on Amazon United States?**
- The niche generates $347K/yr across 14 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +19.1%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the 4gb sd card niche?**
- 9 brands and 53 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 90% of demand.
- **What do buyers complain about in 4gb sd card?**
- Top complaints mined from reviews: Functionality-Overall, Compatibility-Overall, Size-Overall. The return rate is 1.5%.
- **When does demand for 4gb sd card peak?**
- Demand peaks in Jul; the busiest month runs 2.5× the quietest.
- **What does it cost to enter the 4gb sd card niche?**
- Listings span $9.08–$31.47; the average listing price is $15.92 (sweet spot $15–$100). The average incumbent carries 4,696 reviews — the moat a new listing must climb.
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