brompton
Skip itA small market ($57K/yr) — this niche doesn't clear our bar today.
Avg price
Great$46.81avg listing price — sweet spot $15–$100
Price range
Great$13.42–$98.00cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Good+52.2%90-day search growth — must beat 0% to launch
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Review moat
Okay2,081.6avg incumbent reviews — the moat a new listing must climb
Returns
Okay3.6%return rate — above 5% kills the launch gate
Brand share
Okay89%top-5 brand share — brands hold most of the demand
Competition
Bad71%top-5 click share — a locked-up shelf
Conversion
Bad1.4%search→purchase rate — share of searches ending in a sale
Market size
Bad$57K$57K/yr · 85K searches
According to Flapen's Amazon United States niche tracking, brompton is a $57K/yr Amazon United States market (85K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Jul–Sep–Oct. Verdict: Skip it — 42/100.
Data updated Jul 11, 2026 · scored weekly · How we score niches
brompton market data
- Units sold / yr
- 2K–3K
- avg 250–500/product
- Revenue / yr
- $94K–$117K
- units × avg price
- Conversion rate
- 1.4%
- Avg BSR
- #163
- Page quality
- 0%
- Prime
- 93%
- Sponsored
- 67%
- Out of stock
- 0.0%
- Avg brand age
- 33 months
- Avg seller age
- 164 days
Competition & brand share
The top 5 products capture 71% of clicks — a locked-up shelf that new listings rarely crack.Brands
9 rising
Sellers
11
Top-5 brand share
89%
Top 20: 100%
Top-5 click share
71%
Top 20: 100%
Open market
8%
- HOTO66%
- MACFOX14%
- BUCKLOS3%
- Elegananccy3%
- Enjoy Mfg3%
- IUVWISN3%
- Open — no brand owns it (3 brands, 8%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +52.2% search growth over the last 90 days.Peak months: Jul, Sep, Oct · busiest ÷ quietest = 2.4×
Top brompton search terms
- macfox ebike accessories37K/yr
- hoto air pump14K/yr
- e-scooter accessories7K/yr
- evike accessories6K/yr
- puckipuppy ebike accessories5K/yr
- hoto mini bike tire pump5K/yr
- hoto bike pump2K/yr
- hoto tire inflator4K/yr
- hoto pump2K/yr
- hoto air pump pocket2K/yr
Top brompton 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 15 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
HOTO Mini Bike Tire Pump 25s Fast Inflate Bicycle Pump with Guage 150PSI Portable Electric Bike Air Pump with Presta and Schrader Valve for Road Bike Motorcycle Mountain Bike BMX Sports Ball
HOTO$46.714.5★890 rev
HOTO Tire Inflator Portable Electric Air Pump Pro for Car Tires with Digital Pressure Gauge 120PSI Cordless Tire Pump with 12V Motor 7500mAH Battery Air Compressor for Car Motorcycle Bike Ball
HOTO$73.764.4★250 rev
HOTO Air Pump ADV Tire Inflator Portable Air Compressor with Digital Pressure Gauge 150PSI Electric Tire Pump with 2*2000 mAh Battery LED Light & Auto Shut-Off Fits for Car Motorcycle Bike Ball
HOTO$40.264.8★75 rev
HOTO Air Pump Master Portable Cordless Tire Inflator Electric Air Pump with 9 Pump Modes 12V DC Car Connector for Car Bikes Inflatable Pool Float Air Mattress Kayak Tent Paddle Board Sup
HOTO$98.004.2★118 rev
MACFOX Bike Frame Bag Black - Bike Pouch Cycling Phone Wallet with Zipper - Bike Accessories for Storing Phone Suitable Electric Bike
MACFOX$63.614.6★28 rev
Newest
by launch date
BAOUFF Kickstand for Ebike MACFOX Adjustable 6061 Aluminum + PP Kick Stand for Electric Bike MACFOX X1S/X1
BAOUFF$19.788 rev
MACFOX Electric Bike LCD Display Meter Panel Bike Computer Bicycle Speedometer Electric Display 36V 48V LCD GD01 Display 5 Pin Plug for 22.2mm
MACFOX$57.998 rev
Enjoy Mfg USA-Made Seat Cover - Compatible with Macfox X7 / X7L / X1S /X2 e-Bike (Verify fit with seat Measurement Image) #482 (All Black with White Ribs)
Enjoy Mfg$54.6326 rev
MACFOX E-Bike Four-Piston Hydraulic Disc Brake Replacement Set Delivering Superior Braking Performance Hydraulic Brake Upgrade for X1S
MACFOX$86.3026 rev
HOTO Mini Bike Tire Pump 25s Fast Inflate Bicycle Pump with Guage 150PSI Portable Electric Bike Air Pump with Presta and Schrader Valve for Road Bike Motorcycle Mountain Bike BMX Sports Ball
HOTO$46.71890 rev
Trending
90-day click momentum
IUVWISN Throttle for Surron LBX Eride Pro Electric Dirt Bike Twist Handle Throttle Cable for Sur Ron E-Ride Pro SR S SS 2.0 3.0 Black
IUVWISN$32.723.6★
BAOUFF Kickstand for Ebike MACFOX Adjustable 6061 Aluminum + PP Kick Stand for Electric Bike MACFOX X1S/X1
BAOUFF$19.784.8★
BUCKLOS Mountain Bike Pedals MTB Pedals Flat Bicycle Road Bike Adult Large Platform Pedal with Non-Slip Grips for Gravel/Ebike/Hybrid Bikes/Beach Cruiser(9/16 Nylon Purple)
BUCKLOS$21.734.6★
MACFOX Electric Bike LCD Display Meter Panel Bike Computer Bicycle Speedometer Electric Display 36V 48V LCD GD01 Display 5 Pin Plug for 22.2mm
MACFOX$57.994.8★
ROCKBROS Bike/Bicycle Phone Front Frame Bag Waterproof Tube Bag Cycling Pouch E-Bike Accessories for Men Compatible Phone Under 7 Straps Fit All Frames
ROCKBROS$23.024.4★
What buyers say about brompton
What buyers praise and complain about, mined from review topics.What buyers love
“Super bright”
“The build quality is great”
“Fit on my bike perfect”
“As advertised”
“Worth it”
“Easy to install”
“came in handy”
“seems very durable”
“grateful for color choice”
“Good adhesion”
What buyers complain about
“Poor durability”
“seems a little bit big”
“one barely works”
“They never stay charged”
“Low battery life”
“the heat dissipation is terrible”
“Just cheap junk”
“Adhesive is worthless”
“Cheap for a reason”
“Possible defect”
Top return reasons
Common questions
- Is brompton profitable to sell on Amazon United States?
- The niche generates $57K/yr across 15 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +52.2%. Flapen's verdict: Skip it (42/100).
- How competitive is the brompton niche?
- 9 brands and 11 sellers compete. The top 5 products take 71% of clicks and top 5 brands hold 89% of demand.
- What do buyers complain about in brompton?
- Top complaints mined from reviews: Durability, Size-Overall, Functionality-Overall. The return rate is 3.6%.
- When does demand for brompton peak?
- Demand peaks in Jul–Sep–Oct; the busiest month runs 2.4× the quietest.
- What does it cost to enter the brompton niche?
- Listings span $13.42–$98.00; the average listing price is $46.81 (sweet spot $15–$100). The average incumbent carries 2,082 reviews — the moat a new listing must climb.