---
title: "2d 28w 4 Pin Light Bulb — £66K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/lighting/2d-28w-4-pin-light-bulb"
last_updated: "2026-07-31T11:21:14.108Z"
locale: en
meta:
description: "Niche score 38/100 · £66K/yr market · 42K searches/yr · £8.03 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 38/100 · £66K/yr market · 42K searches/yr · £8.03 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "2d 28w 4 Pin Light Bulb — £66K/yr Amazon UK Niche (2026) - Flapen"
---
# **2d 28w 4 pin light bulb**
**Skip it**
Prices mostly outside the sweet spot ($5.88–$11.67) — this niche doesn't clear our bar today.
Market size 16Growth 6Conversion 100Competition 26Returns 20Price range 0Avg price 22Brand share 48Review moat 67Quality gap 94
**Conversion**
**Incredible****19.7%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.0★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****831.5**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Okay****76%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****69%**
top-5 click share — leaders hold, buyers still browse
**Avg price**
**Bad****£8.03**
avg listing price — sweet spot $15–$100
**Returns**
**Bad****6.5%**
return rate — above 5% kills the launch gate
**Market size**
**Bad****£66K**
£66K/yr · 42K searches
**Growth**
**Bad****-38.1%**
90-day search growth — must beat 0% to launch
**Price range**
**Bad****£5.88–£11.67**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=uk&signal=low_review_barrier "Top brand's reviews < 500") [** High Returns**](https://flapen.com/research/niches?market=uk&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United Kingdom niche tracking, 2d 28w 4 pin light bulb is a £66K/yr Amazon United Kingdom market (42K searches/yr). The top 5 brands hold 76% of demand. Demand peaks in Jan–Feb. Verdict: Skip it — 38/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **2d 28w 4 pin light bulb market data**
- **Units sold / yr**
- **8K–10K**
- avg 500–750/product
- **Revenue / yr**
- **£64K–£80K**
- units × avg price
- **Conversion rate**
- **19.7%**
- **Avg BSR**
- **#143**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **78%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **46 months**
- **Avg seller age**
- **189 days**
## **Competition & brand share**
The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **▼falling
**Sellers**
**29**
**Top-5 brand share**
**76%**
Top 20: 100%
**Top-5 click share**
**69%**
Top 20: 100%
**Open market**
**17%**
- Quebec23% - Ddlisu18% - Akynite14% - Liuyife11% - B4U9% - BELL Lighting6% - Open — no brand owns it (7 brands, 17%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -38.1% search growth over the last 90 days.
2K1KSpike '24Holiday '24Prime Day '25Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Feb · busiest ÷ quietest = 3.1×
[**Open Trend **](https://flapen.com/research/uk/lighting/2d-28w-4-pin-light-bulb/trend)
## **Top 2d 28w 4 pin light bulb search terms**
- **28w 4 pin light bulb**9K/yr-32.4%18.2% conv. - **gr10q 4 pin 28w**8K/yr-37.1%16.2% conv. - **4pin light bulb 28w**3K/yr+22.0%13.3% conv. - **2d 28w 4 pin light bulb**8K/yr-58.2%18.1% conv. - **philips pl-q 28w 830 4p**4K/yr-27.0%13.4% conv. - **28w 2d 4 pin**4K/yr-28.1%10.8% conv. - **4 pin light bulbs 28w**3K/yr-80.7%8.2% conv. - **bathroom light bulb 4 pin 28w**2K/yr-80.8%9.1% conv. [**All search terms **](https://flapen.com/research/uk/lighting/2d-28w-4-pin-light-bulb/search-terms)
## **Top 2d 28w 4 pin light bulb 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%£7K20%£13K30%£20K40%£26K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Quebec 28W GR10q CFL 2D Butterfly Bulb 2000LM 3500K Warm White 10000H Lifespan Energy Class A 220V 20x20cm Compact Ceiling Light for Home & Office (28W 4 Pin 3500K)**Quebec**£8.31**4.0★411 rev](https://www.amazon.co.uk/dp/B0DZ2WJZP8) [2**Ddlisu GR10q 4 Pin Light Bulb 28W 3500K Warm White 1 Pack**Ddlisu**£8.16**4.0★638 rev](https://www.amazon.co.uk/dp/B0D6BT7RBN) [3**GR10q 4 Pin 28W 3500K Warm White 2000LM Very Large Size DD Square CFL Compact Fluorescent 4 Pins Light Bulb AC 220V 4 Pin Flat Butterfly Bulb for Flush Ceiling Light 1 PACK (Ballast should >28W)**Akynite**£7.31**4.0★1,606 rev](https://www.amazon.co.uk/dp/B0DRBYYSY4) [4**GR10Q 4-PIN 28W(Large Size 20*20cm) Compact Fluorescent Lamp Non-Dimmable Warm White 3500K 230V Recessed Ceiling Light CFL Light Bulb Low Energy Light Bulb Suitable for Indoor Stair Corridors**Liuyife**£7.68**4.1★526 rev](https://www.amazon.co.uk/dp/B0D232V6XF) [5**Bell 28w 2D Square 4-Pin Gr10q Cap Standard White (3500k) Compact Fluorescent Lamp**BELL Lighting**£6.90**4.3★1,611 rev](https://www.amazon.co.uk/dp/B00370PDR0)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Summalux GR10q 4 PIN 28W 2D Light Bulb Butterfly Light Bulb CFL Compact Fluorescent Lamp 4 Pins Square Bulb Low Energy Light Bulb for Bathroom Ceiling Light 3500K Warm White Non-Dimmable**Summalux**£6.34**8 rev9mo ago](https://www.amazon.co.uk/dp/B0FXM7CC2R) [**B4U GR10q 4 Pin 28W Bathroom Light Bulb 4 Pin Compact Fluorescent CFL Low Energy Light Bulb 28W 2D Flat Butterfly Bulb for Flush Ceiling Light Warm White 3500K**B4U**£7.28**257 rev11mo ago](https://www.amazon.co.uk/dp/B0FLPVHLM3) [**B4U 2 Pack GR10q 4 Pin 28W Bathroom Light Bulbs 4 Pin Compact Fluorescent CFL Low Energy Light Bulbs 28W 2D Flat Butterfly Bulb for Flush Ceiling Light Warm White 3500K**B4U**£10.70**257 rev11mo ago](https://www.amazon.co.uk/dp/B0FLPVV5KP) [**B4U 2 Pack GR10q 4 Pin 28W(Large Size 20 * 20cm) Compact Fluorescent Lamp 2D Bathroom Light Bulb CFL Low Energy Light Bulb 4 Pin Bathroom Light Bulbs for Ceiling Lights Warm White 3500K**B4U**£11.67**499 rev1y ago](https://www.amazon.co.uk/dp/B0F2FCVTXH) [**B4U GR10q 4 Pin Bathroom Light Bulb 2D Square 28W Compact Fluorescent Lamp CFL Low Energy Light Bulb 4 Pin Bathroom Light Bulbs for Ceiling Lights Warm White 3500K**B4U**£7.29**5 rev1y ago](https://www.amazon.co.uk/dp/B0GQZGJXSJ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**B4U GR10q 4 Pin Bathroom Light Bulb 2D Square 28W Compact Fluorescent Lamp CFL Low Energy Light Bulb 4 Pin Bathroom Light Bulbs for Ceiling Lights Warm White 3500K**B4U**£7.29**3.3★**▲ 464%**](https://www.amazon.co.uk/dp/B0GQZGJXSJ) [**Summalux GR10q 4 PIN 28W 2D Light Bulb Butterfly Light Bulb CFL Compact Fluorescent Lamp 4 Pins Square Bulb Low Energy Light Bulb for Bathroom Ceiling Light 3500K Warm White Non-Dimmable**Summalux**£6.34**4.2★**▲ 300%**](https://www.amazon.co.uk/dp/B0FXM7CC2R) [**TBE LIGHTING 28w 2D 4-PIN CFL Energy Saving Lamps - DD Fluorescent Bulbs - 4-Pin GR10q Base Fittings - Long Life Lamp Day Light White 6500K (Single Unit)**TBE LIGHTING**£8.84**4.1★**▲ 269%**](https://www.amazon.co.uk/dp/B09ZLGM4CL) [**B4U GR10q 4 Pin 28W Bathroom Light Bulb 4 Pin Compact Fluorescent CFL Low Energy Light Bulb 28W 2D Flat Butterfly Bulb for Flush Ceiling Light Warm White 3500K**B4U**£7.28**3.9★**▲ 261%**](https://www.amazon.co.uk/dp/B0FLPVHLM3) [![PLUSHA 28W 2D Square 4-Pin GR10Q Energy Saving Light Bulb Cool White 3500K | Long-Lasting & Efficient for Home Office Commercial Use | [Energy Class A]](https://m.media-amazon.com/images/I/31lx-XotQBL.jpg)**PLUSHA 28W 2D Square 4-Pin GR10Q Energy Saving Light Bulb Cool White 3500K | Long-Lasting & Efficient for Home Office Commercial Use | \[Energy Class A\]**PLUSHA**£5.88**3.4★**▲ 113%**](https://www.amazon.co.uk/dp/B0DZ24RPBR)
**~~View all trending →~~**
## **What buyers say about 2d 28w 4 pin light bulb**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Brightness/Shine/Glow**25%
*“Great light”*
**Advertised Vs Actual Product**16%
*“Exactly what I needed”*
**Quality-Overall**14%
*“The light bulbs are great no problem with them great quality”*
**Size-Overall**14%
*“Easy fit”*
**Value For Money**12%
*“worth the purchase”*
**Assembly/Installation**5%
*“Easy to install”*
**Efficiency**5%
*“It works well”*
**Bulb Flicker/Dimming/Color**2%
*“Bulb works well once the flickering startup has finished”*
**Durability**1%
*“Durable product”*
**Ease Of Use**1%
*“Easy to use”*
### **What buyers complain about **
**Durability**33%
*“Took two days to die completely”*
**Functionality-Overall**19%
*“Unfortunately I would not recommend this bulb as the performance is just not good enough”*
**Bulb Flicker/Dimming/Color**14%
*“It was flickering yesterday”*
**Quality-Overall**10%
*“Really disappointed with the quality - it only lasted 5 weeks despite stating it should have a lifespan of 8000 hours”*
**Brightness/Shine/Glow**4%
*“Had trouble lighting up despite new starter”*
**Strength**3%
*“Fragile”*
**Value For Money**3%
*“Im not paying £10 every couple of months”*
**Size-Overall**2%
*“Broke when fitting into light fitting”*
**Natural Resource Wastage**2%
*“Waste of time”*
**Unsustainable Design**1%
*“Build came broken”*
### **Top return reasons **
**Size-Overall**46%
**Functionality-Overall**24%
**Bulb Flicker/Dimming/Color**14%
**Compatibility-Overall**5%
**Brightness/Shine/Glow**2%
**Defective Material/Parts**2%
**Maintenance And Repair**2%
**Connectivity-Overall**1%
**Durability**1%
**Color**1%
## **Common questions**
- **Is 2d 28w 4 pin light bulb profitable to sell on Amazon United Kingdom?**
- The niche generates £66K/yr across 18 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is -38.1%. Flapen's verdict: Skip it (38/100).
- **How competitive is the 2d 28w 4 pin light bulb niche?**
- 13 brands and 29 sellers compete. The top 5 products take 69% of clicks and top 5 brands hold 76% of demand.
- **What do buyers complain about in 2d 28w 4 pin light bulb?**
- Top complaints mined from reviews: Durability, Functionality-Overall, Bulb Flicker/Dimming/Color. The return rate is 6.5% — above our launch gate.
- **When does demand for 2d 28w 4 pin light bulb peak?**
- Demand peaks in Jan–Feb; the busiest month runs 3.1× the quietest.
- **What does it cost to enter the 2d 28w 4 pin light bulb niche?**
- Listings span £5.88–£11.67; the average listing price is £8.03 (sweet spot $15–$100). The average incumbent carries 832 reviews — the moat a new listing must climb.
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