---
title: "Boxes for Posting — £50K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/business-industry-science/boxes-for-posting"
last_updated: "2026-07-31T12:04:51.390Z"
locale: en
meta:
description: "Niche score 39/100 · £50K/yr market · 116K searches/yr · £8.93 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 39/100 · £50K/yr market · 116K searches/yr · £8.93 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Boxes for Posting — £50K/yr Amazon UK Niche (2026) - Flapen"
---
# **boxes for posting**
**Skip it**
A small market ($50K/yr) — this niche doesn't clear our bar today.
Market size 12Growth 16Conversion 57Competition 34Returns 98Price range 17Avg price 25Brand share 39Review moat 70Quality gap 47
**Returns**
**Incredible****0.4%**
return rate — above 5% kills the launch gate
**Review moat**
**Good****710**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Good****4.8%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****82%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****65%**
top-5 click share — leaders hold, buyers still browse
**Avg price**
**Okay****£8.93**
avg listing price — sweet spot $15–$100
**Price range**
**Bad****£4.01–£17.31**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-17.9%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****£50K**
£50K/yr · 116K searches
According to Flapen's Amazon United Kingdom niche tracking, boxes for posting is a £50K/yr Amazon United Kingdom market (116K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in Sep–Nov. Verdict: Skip it — 39/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **boxes for posting market data**
- **Units sold / yr**
- **5K–6K**
- avg 100–250/product
- **Revenue / yr**
- **£45K–£54K**
- units × avg price
- **Conversion rate**
- **4.8%**
- **Avg BSR**
- **#95**
- **Page quality**
- **0%**
- **Prime**
- **72%**
- **Sponsored**
- **72%**
- **Out of stock**
- **2.4%**
- **Avg brand age**
- **40 months**
- **Avg seller age**
- **188 days**
## **Competition & brand share**
The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **▼falling
**Sellers**
**22**
**Top-5 brand share**
**82%**
Top 20: 100%
**Top-5 click share**
**65%**
Top 20: 100%
**Open market**
**14%**
- Triplast44% - Trendecor14% - STRBOXONG12% - All-Pack Solutions7% - Apex Business Supplies5% - HORLIMER4% - Open — no brand owns it (7 brands, 14%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -17.9% search growth over the last 90 days.
5K3KSpike '25Holiday '25 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Nov · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/uk/business-industry-science/boxes-for-posting/trend)
## **Top boxes for posting search terms**
- **small boxes for posting**33K/yr-14.5%4.8% conv. - **small postage boxes**17K/yr-30.4%4.1% conv. - **small shipping boxes**14K/yr-16.6%3.3% conv. - **packaging boxes for small business**11K/yr-6.8%0.6% conv. - **postage boxes small parcel**8K/yr-16.1%3.9% conv. - **small postal boxes**7K/yr-16.6%4.0% conv. - **shipping boxes small**6K/yr-14.3%2.3% conv. - **small packaging boxes**6K/yr-31.5%2.6% conv. - **mailer boxes**4K/yr+15.6%0.0% conv. - **45 x 35 x 16 postal box**4K/yr+2.5%0.8% conv. [**All search terms **](https://flapen.com/research/uk/business-industry-science/boxes-for-posting/search-terms)
## **Top boxes for posting 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%£5K20%£10K30%£15K40%£20K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**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) [2**Corrugated Cardboard Shipping Boxes 15x10x5cm Royal Mail Small Parcel Boxes Packaging Mailing Boxes for Business Posting Storing or Gift(Pack of 10)**STRBOXONG**£8.29**4.6★851 rev](https://www.amazon.co.uk/dp/B0967WPWMJ) [3**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**4.1★30 rev](https://www.amazon.co.uk/dp/B0DSFVC26G) [4**Triplast C6 160 x 110 x 20 mm White PIP Cardboard Large Letter Postal Box for Royal Mail (Pack of 10)**Triplast**£5.16**4.4★3,179 rev](https://www.amazon.co.uk/dp/B01N0I191Q) [5**Triplast 203 x 152 x 102mm Small Single Wall 8x6x4 Shipping Mailing Postal Gift Cuboid Cardboard Boxes (Pack of 25)**Triplast**£7.57**4.6★1,744 rev](https://www.amazon.co.uk/dp/B01DSYR1XS)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**25 Boxes of 8x6x4 Inch Small Cardboard Boxes Pack of 25 | Single Wall Shipping Boxes Mailing & Postal Boxes | Strong Corrugated Packing Boxes for Moving Storage Royal Mail Small Parcel**Apex Business Supplies**£8.20**16 rev2mo ago](https://www.amazon.co.uk/dp/B0GYSQ5QST) [**Small Cardboard Boxes White Corrugated Shipping Boxes 7.1 x 4.3 x1.9 Inches (18 x11 x5 cm) Small Parcel Boxes Packaging Mailing Boxes for Business Posting Storing or Gift(Pack of 10)**Trendecor**£7.50**5 rev7mo ago](https://www.amazon.co.uk/dp/B0GC66HXZ9) [**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) [**HORLIMER 6 Pack Shipping Boxes 152x100x76 mm (6x4x3 inch) Brown Corrugated Cardboard Boxes for Small Item Packaging Secure Storage and Business**HORLIMER**£7.67**445 rev1y ago](https://www.amazon.co.uk/dp/B0CX53MV9C) [**Triplast Ecommerce Crash Lock Boxes with Peel & Seal Strips - Pack of 5 x ECOM02 (200x100x100mm) - Easy to Assemble Quick Seal Strong Cardboard Postal Box Mailers for Packing & Shipping Small Parcels**Triplast**£6.46**57 rev1y ago](https://www.amazon.co.uk/dp/B0DD8NJGLF)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**25 Boxes of 8x6x4 Inch Small Cardboard Boxes Pack of 25 | Single Wall Shipping Boxes Mailing & Postal Boxes | Strong Corrugated Packing Boxes for Moving Storage Royal Mail Small Parcel**Apex Business Supplies**£8.20**4.4★**▲ 339%**](https://www.amazon.co.uk/dp/B0GYSQ5QST) [**APACALI 50 Pack Small Shipping Boxes 150x100x40mm / 5.9 x 3.9 x 1.5 Inch Brown Corrugated Cardboard Mailing Boxes for Business Packing Mailing Storing Posting**APACALI**£16.92**4.3★**▲ 141%**](https://www.amazon.co.uk/dp/B0C6GNGB7Q) [**Small Cardboard Boxes White Corrugated Shipping Boxes 7.1 x 4.3 x1.9 Inches (18 x11 x5 cm) Small Parcel Boxes Packaging Mailing Boxes for Business Posting Storing or Gift(Pack of 10)**Trendecor**£7.50**4.7★**▲ 134%**](https://www.amazon.co.uk/dp/B0GC66HXZ9) [**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**4.1★**▲ 78%**](https://www.amazon.co.uk/dp/B0DSFVC26G) [**Triplast C6 160 x 110 x 20 mm White PIP Cardboard Large Letter Postal Box for Royal Mail (Pack of 10)**Triplast**£5.16**4.4★**▲ 50%**](https://www.amazon.co.uk/dp/B01N0I191Q)
**~~View all trending →~~**
## **What buyers say about boxes for posting**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**19%
*“Good price”*
**Quality-Overall**16%
*“Excellent quality boxes”*
**Size-Overall**14%
*“There good size”*
**Advertised Vs Actual Product**12%
*“As described”*
**Assembly/Installation**10%
*“Easy assembly”*
**Strength**9%
*“Well made and sturdy”*
**Ease Of Use**4%
*“Easy to use”*
**Thickness**2%
*“The thickness of the cardboard is good”*
**Correct Contents**2%
*“Great Little Boxes”*
**Weight Light**2%
*“These are pretty lightweight”*
### **What buyers complain about **
**Quality-Overall**25%
*“boxes are bad quality”*
**Size-Overall**23%
*“Size listing is incorrect”*
**Strength**20%
*“Very flimsy”*
**Adhesion/Stickiness**6%
*“They don't even close properly or line up to tape up”*
**Advertised Vs Actual Product**6%
*“Size listing is incorrect”*
**Thin**3%
*“Very thin”*
**Assembly/Installation**2%
*“Poorly put together needed half a roll of tape to keep it together”*
**Value For Money**2%
*“Not worth the low price”*
**Thickness**1%
*“a bit thin”*
**Cutting/Trimming**1%
*“not very square cut”*
### **Top return reasons **
**Size-Overall**86%
**Strength**3%
**Thin**2%
**Quality-Overall**2%
**Advertised Vs Actual Product**2%
**Defective Material/Parts**1%
**Moist/Dry**1%
**Value For Money**1%
**Ease Of Use**0%
**Functionality-Overall**0%
## **Common questions**
- **Is boxes for posting profitable to sell on Amazon United Kingdom?**
- The niche generates £50K/yr across 18 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -17.9%. Flapen's verdict: Skip it (39/100).
- **How competitive is the boxes for posting niche?**
- 13 brands and 22 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 82% of demand.
- **What do buyers complain about in boxes for posting?**
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Strength. The return rate is 0.4%.
- **When does demand for boxes for posting peak?**
- Demand peaks in Sep–Nov; the busiest month runs 1.7× the quietest.
- **What does it cost to enter the boxes for posting niche?**
- Listings span £4.01–£17.31; the average listing price is £8.93 (sweet spot $15–$100). The average incumbent carries 710 reviews — the moat a new listing must climb.
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