---
title: "Postal Boxes — £51K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/business-industry-science/postal-boxes"
last_updated: "2026-07-31T14:32:27.679Z"
locale: en
meta:
description: "Niche score 50/100 · £51K/yr market · 138K searches/yr · £13.40 avg price. A small market ($51K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 50/100 · £51K/yr market · 138K searches/yr · £13.40 avg price. A small market ($51K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Postal Boxes — £51K/yr Amazon UK Niche (2026) - Flapen"
---
# **postal boxes**
**Worth a look**
Shows low returns (0.1%), but a small market ($51K/yr) keeps it on the watch list.
Market size 13Growth 17Conversion 35Competition 76Returns 99Price range 57Avg price 62Brand share 56Review moat 68Quality gap 58
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Competition**
**Great****39%**
top-5 click share — an open shelf
**Review moat**
**Good****798.17**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Good****£13.40**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Price range**
**Good****£4.01–£29.57**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****71%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Okay****2.8%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-15.2%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****£51K**
£51K/yr · 138K searches
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=uk&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United Kingdom niche tracking, postal boxes is a £51K/yr Amazon United Kingdom market (138K searches/yr). The top 5 brands hold 71% of demand. Demand peaks in Dec. Verdict: Worth a look — 50/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **postal boxes market data**
- **Units sold / yr**
- **3K–4K**
- avg 0–100/product
- **Revenue / yr**
- **£40K–£54K**
- units × avg price
- **Conversion rate**
- **2.8%**
- **Avg BSR**
- **#96**
- **Page quality**
- **0%**
- **Prime**
- **44%**
- **Sponsored**
- **69%**
- **Out of stock**
- **5.6%**
- **Avg brand age**
- **44 months**
- **Avg seller age**
- **185 days**
## **Competition & brand share**
Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.
**Brands**
**25 **▲rising
**Sellers**
**41**
**Top-5 brand share**
**71%**
Top 20: 96%
**Top-5 click share**
**39%**
Top 20: 71%
**Open market**
**24%**
- Triplast19% - W.E. Roberts19% - All-Pack Solutions15% - HORLIMER10% - AKAR9% - Packaging Hero4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -15.2% search growth over the last 90 days.
13K8KHoliday '24Spike '25Holiday '25 seasonSepDecMarJunAugNovMarMay
Peak months: Dec · busiest ÷ quietest = 2.7×
[**Open Trend **](https://flapen.com/research/uk/business-industry-science/postal-boxes/trend)
## **Top postal boxes search terms**
- **postal boxes**67K/yr-19.1%1.8% conv. - **postal box**14K/yr-14.7%1.5% conv. - **royal mail medium parcel box 61x46x46**8K/yr+20.7%0.9% conv. - **packaging boxes for small business**11K/yr-6.8%0.8% conv. - **postal boxes medium**9K/yr-22.2%2.9% conv. - **brown box**6K/yr-19.2%0.4% conv. - **extra large shipping boxes**5K/yr-43.5%2.3% conv. - **mailer boxes**4K/yr+15.6%0.1% conv. - **flat boxes**4K/yr-4.3%0.5% conv. - **100cm x 100cm cardboard box**4K/yr-8.3%0.4% conv. [**All search terms **](https://flapen.com/research/uk/business-industry-science/postal-boxes/search-terms)
## **Top postal boxes 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%4%£2K8%£4K12%£6K16%£8K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**All-Pack Solutions 10 Royal Mail Small Parcel Postal mailing Boxes 350x250x160mm (Deep Option)**All-Pack Solutions**£6.80**4.5★2,660 rev](https://www.amazon.co.uk/dp/B00G6LJRB0) [2**Triplast 203 x 152 x 152mm Small Single Wall 8x6x6 Shipping Mailing Postal Gift Cuboid Cardboard Boxes (Pack of 5)**Triplast**£4.01**4.5★511 rev](https://www.amazon.co.uk/dp/B01DSYR89A) [3**HORLIMER 25 Pack Shipping Boxes 23x15.5x5cm(9x6x2 inches) Corrugated Cardboard Mailing Box Brown**HORLIMER**£17.07**4.7★1,763 rev](https://www.amazon.co.uk/dp/B09DCS5BPJ) [4**AKAR Double Wall Extra Large (XL) Cardboard Boxes (61cm x 46cm x 46 cm) for Moving House Removals Packing including Economy Fragile Tape (2 Boxes + 1 Tape)**AKAR**£16.48**4.2★69 rev](https://www.amazon.co.uk/dp/B08KS52F92) [5**Pack of 50 Die Cut Postal Mailing Cardboard Boxes White (250 x 150 x 100mm)**W.E. Roberts**£22.95**4.3★346 rev](https://www.amazon.co.uk/dp/B003XNCPO0)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**HORLIMER 20 Pack Shipping Boxes 30.5x22.9x10.2cm(12x9x4 inches) Corrugated Cardboard Box for Packing MailingBrown**HORLIMER**£22.52**1,763 rev1y ago](https://www.amazon.co.uk/dp/B0DXV1D8SL) [**HORLIMER 20 Pack 30.5x22.9x10.2cm(12x9x4 inches) Shipping Boxes White Corrugated Cardboard Box for packing Mailing**HORLIMER**£21.26**1,763 rev1y ago](https://www.amazon.co.uk/dp/B0DXVJFZHH) [**Small Cardboard Boxes Brown Corrugated Shipping Boxes 7.3x5 x1.8 Inches (18.5x12.5x4.5 cm) Small Parcel Boxes Packaging Mailing Boxes for Business Posting Storing or Gift(Pack of 10)**Trendecor**£7.56**30 rev1y ago](https://www.amazon.co.uk/dp/B0DSFVC26G) [**Cenoid Medium Postal Boxes 30x20x8cm Pink Postage Parcel Shipping Cardboard Boxes for Posting Shipping Delivery Packaging boxes for Small Business (Pack of 20)**Cenoid**£21.49**178 rev1y ago](https://www.amazon.co.uk/dp/B0DPB68PS9) [**W.E. Roberts Strong Double Wall Cardboard Boxes (Pack of 15) - Boxes for posting Boxes for moving house Packing boxes Postal Shipping Boxes (305mm x 229mm x 229mm (12 x 9 x 9))**W.E. Roberts**£14.01**416 rev1y ago](https://www.amazon.co.uk/dp/B0DKTJCJDS)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**AKAR Double Wall Extra Large (XL) Cardboard Boxes (61cm x 46cm x 46 cm) for Moving House Removals Packing including Economy Fragile Tape (2 Boxes + 1 Tape)**AKAR**£16.48**4.2★**▲ 274%**](https://www.amazon.co.uk/dp/B08KS52F92) [**Cenoid Medium Postal Boxes 30x20x8cm Pink Postage Parcel Shipping Cardboard Boxes for Posting Shipping Delivery Packaging boxes for Small Business (Pack of 20)**Cenoid**£21.49**4.5★**▲ 252%**](https://www.amazon.co.uk/dp/B0DPB68PS9) [**HORLIMER 25 Pack Shipping Boxes 23x15.5x5cm(9x6x2 inches) Corrugated Cardboard Mailing Box Brown**HORLIMER**£17.07**4.7★**▲ 238%**](https://www.amazon.co.uk/dp/B09DCS5BPJ) [**Triplast 203 x 152 x 152mm Small Single Wall 8x6x6 Shipping Mailing Postal Gift Cuboid Cardboard Boxes (Pack of 5)**Triplast**£4.01**4.5★**▲ 111%**](https://www.amazon.co.uk/dp/B01DSYR89A) [**100 x C5 A5 PIP Box Shipping Mail Postal Large Letter Boxes - Size: 235x165x22mm Sold by MEG4TEC**Generic**£10.63**4.3★**▲ 75%**](https://www.amazon.co.uk/dp/B08GLZ9VKB)
**~~View all trending →~~**
## **What buyers say about postal boxes**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Strength**25%
*“Good and strong”*
**Quality-Overall**16%
*“Excellent Product”*
**Size-Overall**14%
*“There good size”*
**Value For Money**13%
*“fair price”*
**Advertised Vs Actual Product**10%
*“As advertised”*
**Assembly/Installation**3%
*“Easy assembly”*
**Ease Of Use**3%
*“Easy to use”*
**Storage Capacity**2%
*“Good storage capacity”*
**Portability**2%
*“be able to carry”*
**Weight Light**1%
*“Good for lightweight stuff”*
### **What buyers complain about **
**Strength**31%
*“Too flimsy”*
**Size-Overall**25%
*“Too big”*
**Quality-Overall**12%
*“Bad quality”*
**Thickness**4%
*“thinner than I expected”*
**Advertised Vs Actual Product**4%
*“Misleading information”*
**Adhesion/Stickiness**3%
*“They don't even close properly or line up to tape up”*
**Value For Money**2%
*“couldve been better if cheaper”*
**Durability**2%
*“It breaks easily”*
**Ease Of Use**1%
*“difficult to carry. unless you have arms long like an ape.”*
**Weight Light**1%
*“absolutely not for anything heavy”*
### **Top return reasons **
**Size-Overall**78%
**Strength**6%
**Quality-Overall**4%
**Advertised Vs Actual Product**2%
**Thin**1%
**Defective Material/Parts**1%
**Value For Money**1%
**Water Resistance**1%
**Compatibility-Overall**1%
**Product Condition**1%
## **Common questions**
- **Is postal boxes profitable to sell on Amazon United Kingdom?**
- The niche generates £51K/yr across 48 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -15.2%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the postal boxes niche?**
- 25 brands and 41 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 71% of demand.
- **What do buyers complain about in postal boxes?**
- Top complaints mined from reviews: Strength, Size-Overall, Quality-Overall. The return rate is 0.1%.
- **When does demand for postal boxes peak?**
- Demand peaks in Dec; the busiest month runs 2.7× the quietest.
- **What does it cost to enter the postal boxes niche?**
- Listings span £4.01–£29.57; the average listing price is £13.40 (sweet spot $15–$100). The average incumbent carries 798 reviews — the moat a new listing must climb.
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