Is t12 4ft fluorescent bulb profitable to sell on Amazon United States?

The niche generates $321K/yr across 45 tracked products. 6 of 11 products launched in the last 360 days are still selling. 90-day search growth is +1.0%. Flapen's verdict: Worth a look (61/100).

How competitive is the t12 4ft fluorescent bulb niche?

17 brands and 37 sellers compete. The top 5 products take 32% of clicks and top 5 brands hold 57% of demand.

What do buyers complain about in t12 4ft fluorescent bulb?

Top complaints mined from reviews: Durability, Brightness/Shine/Glow, Functionality-Overall. The return rate is 4.0%.

When does demand for t12 4ft fluorescent bulb peak?

Demand peaks in Nov; the busiest month runs 1.8× the quietest.

What does it cost to enter the t12 4ft fluorescent bulb niche?

Listings span $19.42–$198.40; the average listing price is $54.37 (sweet spot $15–$100). The average incumbent carries 335 reviews — the moat a new listing must climb.

t12 4ft fluorescent bulb

Worth a look

Shows a sweet-spot price point ($54.37 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Avg price

Great$54.37

avg listing price — sweet spot $15–$100

Competition

Great32%

top-5 click share — an open shelf

Review moat

Great334.62

avg incumbent reviews — the moat a new listing must climb

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Brand share

Great57%

top-5 brand share — no brand owns this niche

Conversion

Good5.4%

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

Market size

Good$321K

$321K/yr · 109K searches

Price range

Okay$19.42–$198.40

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

Returns

Okay4.0%

return rate — above 5% kills the launch gate

Growth

Okay+1.0%

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

Signals No Dominant Brand High Price

According to Flapen's Amazon United States niche tracking, t12 4ft fluorescent bulb is a $321K/yr Amazon United States market (109K searches/yr). The top 5 brands hold 57% of demand. Demand peaks in Nov. Verdict: Worth a look — 61/100.

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

t12 4ft fluorescent bulb market data

Units sold / yr: 4K–5K; avg 100–250/product
Revenue / yr: $217K–$272K; units × avg price
Conversion rate: 5.4%
Avg BSR: #745
Page quality: 0%
Prime: 78%
Sponsored: 71%
Out of stock: 5.2%
Avg brand age: 67 months
Avg seller age: 178 days

Competition & brand share

Clicks spread well past the top 5 (32% combined) — an open shelf where new products get seen.

Brands

17 falling

Sellers

Top-5 brand share

57%

Top 20: 100%

Top-5 click share

32%

Top 20: 81%

Open market

35%

SUSLUM14%
SYLVANIA13%
JESLED12%
PHILIPS10%
Konideke9%
Master Of Light7%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +1.0% search growth over the last 90 days.

Peak months: Nov · busiest ÷ quietest = 1.8×

Open Trend

Top t12 4ft fluorescent bulb search terms

t12 4ft fluorescent bulb33K/yr +2.8%3.8% conv.
f40t12 fluorescent bulb21K/yr +6.7%5.0% conv.
t1210K/yr +1.1%0.7% conv.
f40t128K/yr -9.4%3.4% conv.
philips f40t12/dx 40 watt7K/yr -21.9%5.5% conv.
f40cw fluorescent bulb5K/yr -5.7%6.1% conv.
t12 bulbs4K/yr -1.8%1.4% conv.
philips f40t12/cw supreme 40 watt3K/yr +36.2%9.4% conv.
t 12 fluorescent light bulbs 4 ft3K/yr +15.4%4.2% conv.
t12 bulb4K/yr +11.5%1.0% conv.

All search terms

Top t12 4ft fluorescent 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

SUSLUM Fluorescent Light Bulbs 48 inch T8 LED Bulb 4 Foot Type A+B Replacement for F32T8 or F40T12 Tube 24W 3200LM 5000K Daylight Double or Single End Powered 2-Pack

SUSLUM$27.544.6★159 rev

Konideke 8-Pack F40T12/841 Fluorescent Light Bulbs 40W T12 Cool White 4100K 48-Inch (4-Foot) Linear Tube G13 Bipin Base

Konideke$77.373.9★17 rev

Sylvania 21371 - F40CWX 2PK Straight T12 Fluorescent Tube Light Bulb

SYLVANIA$26.004.4★243 rev

SUSLUM Fluorescent Light Bulbs Replacement 4FT T8 LED Bulbs 4 Foot Type A+B 24W (65W Equivalent) 3200LM 5000K Daylight 48 Inch Tube F32T8 or F40T12 LED Replacement Non-Dimmable 2-Pack

SUSLUM$27.294.6★353 rev

Ignixlite (6Pack) T12 4FT Fluorescent Bulb F40T12/CW 40W 48inch Light Tube 4100K Cool White Replaces F40T12/CW/Supreme F40CWX Medium Bipin(G13) Base 2600 Lumens

Ignixlite$68.443.6★33 rev

Newest

by launch date

Konideke 8-Pack F40T12/841 Fluorescent Light Bulbs 40W T12 Cool White 4100K 48-Inch (4-Foot) Linear Tube G13 Bipin Base

Konideke$77.3717 rev

6mo ago

amgolibi 8-Pack 48 Inch F40T12/DL 40W 6500K Daylight Fluorescent Light Bulbs 4ft T12 Linear Tube Lights 2650 Lumens G13 Bi-Pin Base Daylight for Workshop Garage Office

amgolibi$75.6027 rev

6mo ago

Replacement for Philips 423889 F40T12/CW/SUPREME/ALTO 40 Watt 4000K T12 Fluorescent Tube Light Bulb (2 Pack)

Industrial Performance$38.9823 rev

8mo ago

CYLYT Fluorescent Light Bulbs 48 inch T8 LED Bulb 4 Foot Type A+B Replacement for F32T8 or F40T12 Tube 26W 3400LM 4100K Cool White Double or Single End Powered 4-Pack

CYLYT$39.8456 rev

10mo ago

CYLYT Fluorescent Light Bulbs 48 inch Long Type A+B T8 LED Bulb 4 Foot Replacement for F32T8 or F40T12 Lights Tube 26W(65W Equivalent) 3400lm 6000K Daylight White Non-Dimmable 4-Pack

CYLYT$39.8539 rev

10mo ago

What buyers say about t12 4ft fluorescent bulb

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

What buyers love

Brightness/Shine/Glow36%

“Super Bright”

Assembly/Installation9%

“Installation was quick”

Quality-Overall9%

“Bright Lights Really Nice Quality”

Advertised Vs Actual Product8%

“As advertised”

Value For Money6%

“Great value”

Size-Overall5%

“a snug fit”

Ease Of Use4%

“Easy to use”

Color3%

“Color was great”

Bulb Flicker/Dimming/Color3%

“No weird flickering like the last set. those apparently required the ballast be removed”

Functionality-Overall2%

“Works perfect with some easy rewiring of ballast- basically just cutting ballast wires out of circuit”

What buyers complain about

Durability13%

“Died after 2 years”

Brightness/Shine/Glow11%

“its just never brighten enough”

Functionality-Overall8%

“Didn't work”

Quality-Overall7%

“Extremely poor quality”

Bulb Flicker/Dimming/Color7%

“They flicker regularly”

Size-Overall7%

“They turned out to be much too long for my use”

Defective Material/Parts6%

“They are not turning on”

Value For Money6%

“That said, $40 for four feels too expensive”

Advertised Vs Actual Product3%

“Don't believe the false advertising”

Flammable3%

“Potential Fire Danger”

Top return reasons

Size-Overall28%

Bulb Flicker/Dimming/Color18%

Defective Material/Parts14%

Compatibility-Overall10%

Functionality-Overall8%

Brightness/Shine/Glow6%

Advertised Vs Actual Product5%