---
title: "roof box — £455K/yr Amazon United Kingdom Niche, Score 64/100 - Flapen"
canonical_url: "https://flapen.com/research/uk/automotive/roof-box"
last_updated: "2026-07-20T19:47:20.396Z"
locale: en
meta:
description: "roof box shows demand growing +112.1% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "roof box shows demand growing +112.1% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "roof box — £455K/yr Amazon United Kingdom Niche, Score 64/100 - Flapen"
---
# **roof box**
**Worth a look**
Shows demand growing +112.1% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 58Growth 95Conversion 14Competition 76Returns 48Price range 32Avg price 86Brand share 72Review moat 68Quality gap 72
**Growth**
**Incredible****+112.1%**
90-day search growth — must beat 0% to launch
**Avg price**
**Great****£70.32**
avg listing price — sweet spot $15–$100
**Competition**
**Great****39%**
top-5 click share — an open shelf
**Brand share**
**Good****62%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****798.95**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Good****£455K**
£455K/yr · 562K searches
**Returns**
**Okay****3.2%**
return rate — above 6% kills the launch gate
**Price range**
**Okay****£24.53–£258.34**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Bad****1.1%**
search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United Kingdom niche tracking, roof box is a £455K/yr Amazon United Kingdom market (562K searches/yr). The top 5 brands hold 62% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 64/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **Market data**
- **Units sold / yr**
- **5K–6K**
- avg 100–250/product
- **Revenue / yr**
- **£352K–£422K**
- units × avg price
- **Launch success**
- **60%**
- 3 of 5 new (360d)
- **Conversion rate**
- **1.1%**
- **Avg BSR**
- **#16**
- **Page quality**
- **0%**
- **Prime**
- **67%**
- **Sponsored**
- **93%**
- **Out of stock**
- **5.7%**
- **Avg brand age**
- **43 months**
- **Avg seller age**
- **189 days**
## **Competition**
Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.
**Brands**
**18 **▼falling
**Sellers**
**29**
**Top-5 brand share**
**62%**
Top 20: 100%
**Top-5 click share**
**39%**
Top 20: 78%
**Open market**
**32%**
- GADLANE21% - Sailnovo16% - BOYUJK11% - Amazon Basics8% - Marretoo7% - COSTWAY7%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +112.1% search growth over the last 90 days.
35K25KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 6.4×
[**Open Trend **](https://flapen.com/research/uk/automotive/roof-box/trend)
## **Product shelf**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%3%£14K6%£27K9%£41K12%£55K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 42 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**GADLANE Car Roof Bag - 20 Cubic Feet (550L) Waterproof Roof Box Storage**GADLANE**£43.23**4.2★551 rev](https://www.amazon.co.uk/dp/B0CTMZT8YC) [2**Sailnovo Car Roof Bag 20 Cubic Feet Foldable Roof Box Soft Roof Box Storage for Most Cars with/without Roof Bars Include 6 Reinforced Straps 6 Door Hooks**Sailnovo**£60.97**4.6★3,448 rev](https://www.amazon.co.uk/dp/B0CDXH73T4) [3**Amazon Basics Rooftop Cargo Carrier Bag 425L Waterproof Heavy Duty Car Roof Bag for Vehicles with Roof Rack 8 Reinforced Straps Foldable Storage Bag Included Black**Amazon Basics**£35.45**4.4★8,350 rev](https://www.amazon.co.uk/dp/B072ZHRDMZ) [4**BOYUJK Roof Bag 20 Cubic/566 L Waterproof Car Roof Bag no Rack Needed Car Roof Box with Anti-Slip Mat and 6 Heavy-Duty Straps Folding Soft Roof Bag for Cars with/Without Rack Orange 566L**BOYUJK**£50.93**4.4★905 rev](https://www.amazon.co.uk/dp/B0BS1NGRH8) [5**Marretoo Car Roof Bag 21 Cubic Feet Large Roofing Cargo Carrier Bags Waterproof Soft Rooftop Luggage Storage Box for Any Cars with Roof Rack/Rails/Bars includes Anti-Slip Mat**Marretoo**£55.18**4.5★350 rev](https://www.amazon.co.uk/dp/B09NMZLP2C)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**COSTWAY 14 Cubic Feet/400L Car Roof Bag Waterproof Foldable Roofing Cargo Carrier with 4 Reinforced Straps Anti-Slip Bottom & Storage Bag Soft-Shell Rooftop Luggage Storage Box for All Cars (Grey)**COSTWAY**£55.90**35 rev5mo ago](https://www.amazon.co.uk/dp/B0GM115KKL) [**GEARFLOW Car Roof Box Gloss Black 400L Capacity Hard Roof Cargo Carrier with Security Keys Dual Side Opening Waterproof Roof Top Luggage Storage Box for Camping Travel Fits Most Cars**GEARFLOW**£201.23**1 rev5mo ago](https://www.amazon.co.uk/dp/B0GKFNPJ18) [**Sailnovo Car Roof Bag 21 Cubic Feet Foldable Roof Box Soft Roof Box Storage for Most Cars with/without Roof Bars Include 6 Reinforced Straps 6 Door HooksAnti-Slip Mat**Sailnovo**£59.99**3,448 rev5mo ago](https://www.amazon.co.uk/dp/B0GJ5WVVX3) [**KEVEBUB Car Roof Bag 21 Cu Ft / 600L Waterproof Roof Box for Cars Heavy Duty 800D PVC Rooftop Cargo Carrier with Anti-Slip Mat 6 Door Hooks Combination Lock & Storage Bag With/Without Roof Rack**KEVEBUB**£43.54**41 rev7mo ago](https://www.amazon.co.uk/dp/B0G4LYS4J8) [**Car Roof Box 450L Capacity Extra-Large Hard Roof Cargo Carrier with Security Keys & Dual Side Opening Waterproof Rooftop Luggage Storage Box for Car SUV Van Fits Most Cars (Black)**GEARFLOW**£258.34**14 rev11mo ago](https://www.amazon.co.uk/dp/B0FJYD8CSY)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**GEARFLOW Car Roof Box Gloss Black 400L Capacity Hard Roof Cargo Carrier with Security Keys Dual Side Opening Waterproof Roof Top Luggage Storage Box for Camping Travel Fits Most Cars**GEARFLOW**£201.23**4.0★**▲ 171%**](https://www.amazon.co.uk/dp/B0GKFNPJ18) [**Sailnovo Car Roof Bag 21 Cubic Feet Foldable Roof Box Soft Roof Box Storage for Most Cars with/without Roof Bars Include 6 Reinforced Straps 6 Door HooksAnti-Slip Mat**Sailnovo**£59.99**4.6★**▲ 153%**](https://www.amazon.co.uk/dp/B0GJ5WVVX3) [**COSTWAY 14 Cubic Feet/400L Car Roof Bag Waterproof Foldable Roofing Cargo Carrier with 4 Reinforced Straps Anti-Slip Bottom & Storage Bag Soft-Shell Rooftop Luggage Storage Box for All Cars (Grey)**COSTWAY**£55.90**4.0★**▲ 119%**](https://www.amazon.co.uk/dp/B0GM115KKL) [**KEVEBUB Car Roof Bag 21 Cu Ft / 600L Waterproof Roof Box for Cars Heavy Duty 800D PVC Rooftop Cargo Carrier with Anti-Slip Mat 6 Door Hooks Combination Lock & Storage Bag With/Without Roof Rack**KEVEBUB**£43.54**4.4★**▲ 104%**](https://www.amazon.co.uk/dp/B0G4LYS4J8) [**Marretoo Weatherproof Car Roof Bag 600L Car Top Storage for Camping & Travel Universal Fit for SUV/Hatchback affordable roof box UK Heavy-Duty PVC with Anti-Scratch Mat Orange/21 Cubic Feet**Marretoo**£52.07**4.5★**▲ 101%**](https://www.amazon.co.uk/dp/B0DNMQWMXL)
**~~View all trending →~~**
## **Reviews**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Storage Capacity**16%
*“easy to store”*
**Quality-Overall**14%
*“Brilliant quality”*
**Water Resistance**11%
*“water proof”*
**Size-Overall**9%
*“easy fit me”*
**Value For Money**7%
*“Good price”*
**Material Quality**6%
*“made of strong material good quality”*
**Ease Of Use**6%
*“easy to use”*
**Strength**4%
*“The material is really sturdy”*
**Durability**4%
*“The material is think and durable”*
**Assembly/Installation**3%
*“Very easy to assemble”*
### **What buyers complain about **
**Water Resistance**15%
*“our things were wet”*
**Strap/String Quality**11%
*“Over all very disappointed with this product as the straps are not very strong either”*
**Size-Overall**9%
*“Did not fit my car despite saying it fits all cars”*
**Durability**8%
*“doesnt last”*
**Leak-Proof**4%
*“I think it would have to be pretty torrential for it too leak”*
**Advertised Vs Actual Product**3%
*“looks nothing like the picture”*
**Functionality-Overall**3%
*“it didnt function”*
**Ease Of Use**3%
*“a little awkward to use”*
**Strength**2%
*“A little more flimsy than I was anticipating”*
**Quality-Overall**2%
*“Not made well”*
### **Top return reasons **
**Size-Overall**34%
**Compatibility-Overall**21%
**Strap/String Quality**8%
**Water Resistance**4%
**Quality-Overall**4%
**Advertised Vs Actual Product**3%
**Add-Ons/Attachments**3%
**Defective Material/Parts**3%
**Functionality-Overall**2%
**Assembly/Installation**2%
## **Common questions**
- **Is roof box profitable to sell on Amazon United Kingdom?**
- The niche generates £455K/yr across 42 tracked products. 3 of 5 products launched in the last 360 days are still selling. 90-day search growth is +112.1%. Flapen's verdict: Worth a look (64/100).
- **How competitive is the roof box niche?**
- 18 brands and 29 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 62% of demand.
- **What do buyers complain about in roof box?**
- Top complaints mined from reviews: Water Resistance, Strap/String Quality, Size-Overall. The return rate is 3.2%.
- **When does demand for roof box peak?**
- Demand peaks in May–Jun–Jul–Aug; the busiest month runs 6.4× the quietest.
- **What does it cost to enter the roof box niche?**
- Listings span £24.53–£258.34; the average listing price is £70.32 (sweet spot $15–$100). The average incumbent carries 799 reviews — the moat a new listing must climb.
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