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100 watt bayonet light bulbs

Skip it

Soft demand (-53.5% this quarter) — this niche doesn't clear our bar today.

Market size 27Growth 0Conversion 96Competition 51Returns 84Price range 0Avg price 23Brand share 57Review moat 70Quality gap 30

Conversion

Incredible12.8%

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

Returns

Great1.5%

return rate — above 5% kills the launch gate

Review moat

Good711.35

avg incumbent reviews — the moat a new listing must climb

Brand share

Good71%

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

Competition

Good55%

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Market size

Okay£116K

£116K/yr · 110K searches

Avg price

Bad£8.25

avg listing price — sweet spot $15–$100

Growth

Bad-53.5%

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

Price range

Bad£4.98–£12.86

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

According to Flapen's Amazon United Kingdom niche tracking, 100 watt bayonet light bulbs is a £116K/yr Amazon United Kingdom market (110K searches/yr). The top 5 brands hold 71% of demand. Demand peaks in Jan–Feb–Oct–Nov–Dec. Verdict: Skip it — 43/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

100 watt bayonet light bulbs market data

Units sold / yr
13K–15K
avg 500–750/product
Revenue / yr
£103K–£124K
units × avg price
Conversion rate
12.8%
Avg BSR
#364
Page quality
0%
Prime
100%
Sponsored
85%
Out of stock
11.7%
Avg brand age
51 months
Avg seller age
184 days

Competition & brand share

The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.

Brands

13 falling

Sellers

35

Top-5 brand share

71%

Top 20: 100%

Top-5 click share

55%

Top 20: 100%

Open market

22%

  • Energizer27%
  • EvaStary16%
  • ROTTYI10%
  • Lepro9%
  • Generic8%
  • paul russells7%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -53.5% search growth over the last 90 days.
4K3KSpike '24Spike '25Black Friday '25SepDecMarJunAugNovMarMay

Peak months: Jan, Feb, Oct, Nov, Dec · busiest ÷ quietest = 3.7×

Top 100 watt bayonet light bulbs search terms

  • 100 watt bayonet light bulbs18K/yr
  • 100 watt light bulbs11K/yr
  • 100w bayonet light bulbs14K/yr
  • bayonet light bulb 100w8K/yr
  • light bulb 100w5K/yr
  • 100w bulb8K/yr
  • 100w equivalent led light bulbs4K/yr
  • 100w led bulb bayonet5K/yr
  • 100w light bulbs bayonet4K/yr
  • 100w light bulb4K/yr
All search terms

Top 100 watt bayonet light bulbs 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%£12K20%£23K30%£35K40%£47K101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 20 tracked products in this niche — three views at once, no toggling.

What buyers say about 100 watt bayonet light bulbs

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

What buyers love

Brightness/Shine/Glow49%

“Bright light”

Value For Money16%

“Value for money”

Quality-Overall11%

“Excellent product”

Advertised Vs Actual Product8%

“Exactly what I wanted”

Color4%

“perfect colour”

Bulb Flicker/Dimming/Color3%

“Bright cool bulb”

Size-Overall2%

“They fit”

Efficiency2%

“Efficient”

Durability1%

“Very good product long life”

Assembly/Installation1%

“easy to install”

What buyers complain about

Brightness/Shine/Glow28%

“too bright couldnt use”

Quality-Overall13%

“Some rubbish”

Bulb Flicker/Dimming/Color11%

“Some rubbish, one bulb burned out after 2 days of use”

Size-Overall9%

“do not fit into the ceiling light”

Durability9%

“Longevity proved disappointing”

Color7%

“the color is harsh rather than pleasant”

Noise Level6%

“Annoying Buzz noise”

Defective Material/Parts3%

“One of the light bulbs did not work”

Functionality-Overall2%

“Relying on one bulb doesnt brighten the room well enough”

Natural Resource Wastage2%

“Waste of time and money”

Top return reasons

Brightness/Shine/Glow31%
Color25%
Size-Overall15%
Bulb Flicker/Dimming/Color9%
Functionality-Overall5%
Compatibility-Overall3%
Advertised Vs Actual Product3%
Quality-Overall3%
Defective Material/Parts1%
Rusts/Corrodes1%

Common questions

Is 100 watt bayonet light bulbs profitable to sell on Amazon United Kingdom?
The niche generates £116K/yr across 20 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -53.5%. Flapen's verdict: Skip it (43/100).
How competitive is the 100 watt bayonet light bulbs niche?
13 brands and 35 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 71% of demand.
What do buyers complain about in 100 watt bayonet light bulbs?
Top complaints mined from reviews: Brightness/Shine/Glow, Quality-Overall, Bulb Flicker/Dimming/Color. The return rate is 1.5%.
When does demand for 100 watt bayonet light bulbs peak?
Demand peaks in Jan–Feb–Oct–Nov–Dec; the busiest month runs 3.7× the quietest.
What does it cost to enter the 100 watt bayonet light bulbs niche?
Listings span £4.98–£12.86; the average listing price is £8.25 (sweet spot $15–$100). The average incumbent carries 711 reviews — the moat a new listing must climb.