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Large Letter Postal Boxes

Fail

Prices span $4.56–$14.95, mostly outside the sweet spot, so Large Letter Postal Boxes is a Fail.

Flapen Score
42
42 / 100
Ranks 550 of 835 Stationery & Office Supplies niches · −5 vs the category median of 47
Market size
£42K/yr97K searches / yr
90-day growth
-14.7%search demand this quarter
Competition
52%top-5 click share · 11 brands · 25 sellers

Flapen Score

Large Letter Postal Boxes against its category

The dotted line is the Stationery & Office Supplies average. Past it, Large Letter Postal Boxes is stronger. Inside it, weaker.

42Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Large Letter Postal Boxes market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Large Letter Postal Boxes 97K times last year and spent an estimated £42K. The top 5 brands take 78% of clicks. Demand peaks in Nov–Dec. Flapen scores it 42 out of 100, a Fail.

01 · Demand

An estimated 5.0% of those searches ended in a purchase.

Shoppers searched for this 97K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 5.0% of those searches ended in a purchase. Searches in the last 90 days moved -14.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated £42K a year.

Searches, last 12 months
97K
Growth, 90 days vs prior 90
-14.7%
Conversion, latest week
5.0%
Market size, estimated
£42Ka year
Peak month
December2.0× the quietest month
Top search term
large letter postal boxes28K searches a year

02 · Price

A sale here is worth £8.78.

Listings sell for £8.78 on average, from £4.56 to £14.95. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 100 to 250 of them. At £8.78 that is £878 to £2K a year per listing.

Average price
£8.78under the $15 to $100 sweet spot
Price range
£4.56–£14.95
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
5K–6K
Units per listing a year
100–250
Revenue per listing a year
£878–£2K
Returns
0.5%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is low.

56% of listings pay for placement with sponsored ads. 33% ship with Prime. On an average day, 3.0% of listings are out of stock. The average listing ranks #164 within Envelopes & Mailing Supplies. It carries 755 reviews at 4.43 stars, so a new listing needs social proof before a better product.

Sponsored listings
56%
Prime listings
33%
Out of stock, average day
3.0%
Average rank
#164in Envelopes & Mailing Supplies
Average rating
4.43 starsAmazon United Kingdom average 4.36 stars
Average reviews
755per listing
Listings tracked
27

04 · Newcomers

0 of last year's 1 launches cleared the first-year sales bar.

1 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 47 months on average, so the names here are settling in.

Launched, last 12 months
1
Successful launches
0Amazon's first-year sales bar
Average brand age
47 months

Products

Top Large Letter Postal Boxes products & what they sell for

The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.

Prices and ratings read from Amazon on Jul 29, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 52% of clicks. Leaders hold, but buyers still shop past them.

£0£2K£3K£5K£7K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

Brands

11 falling

Sellers

25

Est. top-5 brand share

78%

Top 20: 100%

Est. top-5 click share

52%

Top 20: 93%

Open market

15%

  • AKAR28%
  • Triplast23%
  • Generic12%
  • Parcel Pack9%
  • STRBOXONG7%
  • MEG4TEC6%
  • Open — no brand owns it (5 brands, 15%)

Demand

Large Letter Postal Boxes search demand

Weekly searches over the year, seasonality beneath. Pick a range.

4K3KSpike '24Holiday '24Spike '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Nov, Dec · busiest ÷ quietest = 2.0×

Search terms

Top Large Letter Postal Boxes search terms shoppers use

The exact words shoppers type, with estimated yearly volume, growth, and conversion.

  • large letter postal boxes28K/yr
  • letterbox boxes16K/yr
  • large letter boxes11K/yr
  • c6 postal boxes7K/yr
  • c5 postal boxes8K/yr
  • large letter box7K/yr
  • letter box boxes6K/yr
  • pip boxes4K/yr
  • cardboard letter box3K/yr
  • a5 postal boxes3K/yr

Reviews and returns

What reviews say buyers love and hate about Large Letter Postal Boxes

We read the reviews and the return reasons for every product selling here.

23%of positive reviews mention “Size-Overall”
23%of negative reviews mention “Quality-Overall”
0.5%of orders come back
“Bad quality”
A buyer, on “Quality-Overall”23% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

16 topics

NegativePositive

FAQ

Common Large Letter Postal Boxes questions

Answered from the same tracked data.

Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data