Large Letter Postal Boxes
FailPrices span $4.56–$14.95, mostly outside the sweet spot, so Large Letter Postal Boxes is a Fail.
- Flapen Score
- 42 / 100Ranks 550 of 835 Stationery & Office Supplies niches · −5 vs the category median of 4742
- 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.
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
5.0% of searches ended in a purchase last week.
Shoppers searched for this 97K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 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
Amazon counts 0 of last year's 1 launches as successful.
1 products launched here in the last 12 months. Amazon counts 0 of them as successful launches, new products that hit its first-year sales bar. 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
Every tracked product: its share of the shelf, its reviews, and its price.
Top sellers
by 90-day click share
Triplast C6 160 x 110 x 20 mm White PIP Cardboard Large Letter Postal Box for Royal Mail (Pack of 50)
- Price
- £8.91
- Rating
- 4.4/5
- Reviews
- 3,182
- Age
- 9y ago

AKAR Corrugated Manila Large Letter Postal Box C5 A5 PIP Boxes Royal Mail
- Price
- £7.73
- Rating
- 4.6/5
- Reviews
- 583
- Age
- 7y ago

100 x C5 A5 PIP Box Shipping Mail Postal Large Letter Boxes - Size: 235x165x22mm Sold by MEG4TEC
- Price
- £10.66
- Rating
- 4.3/5
- Reviews
- 452
- Age
- 11y ago

Generic 50 x C5 A5 PIP Box Shipping Mail Postal Large Letter Boxes - Size: 235x165x22mm Sold by MEG4TEC
- Price
- £7.26
- Rating
- 4.3/5
- Reviews
- 3,328
- Age
- 11y ago

Triplast C6 160 x 110 x 20 mm White PIP Cardboard Large Letter Postal Box for Royal Mail (Pack of 10)
- Price
- £5.18
- Rating
- 4.4/5
- Reviews
- 3,182
- Age
- 9y ago
Trending
90-day click momentum
C4 Large Letter Postal Boxes 100 Pack Strong Corrugated Cardboard Mailing Boxes PIP Large Letter Size Flat Packed Shipping Boxes for Documents E-commerce
- Price
- £14.95
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 1mo ago

Triplast C6 160 x 110 x 20 mm White PIP Cardboard Large Letter Postal Box for Royal Mail (Pack of 10)
- Price
- £5.18
- Rating
- 4.4/5
- Reviews
- 3,182
- Age
- 9y ago

TGL PACKAGING C5 / A5 (218x159x20mm) Royal Mail Brown Large Letter Cardboard Postal Mailing PiP Boxes (10)
- Price
- £5.79
- Rating
- 4.6/5
- Reviews
- 231
- Age
- 4y ago

C6 A6 Postal Pip Boxes - Large Letter & Flat Pack Boxes Size 16.3cm x 11.2cm x 2cm - Pack of 25 (White)
- Price
- £8.20
- Rating
- 4.7/5
- Reviews
- 7
- Age
- 1y ago

C6 A6 PiP Shipping Mailing Postal Large Letter box 160 x 111 x 19mm (16 x 11 x 1.9 cm) - Eco-Friendly and 100% Recyclable. (50)
- Price
- £8.49
- Rating
- 4.6/5
- Reviews
- 63
- Age
- 4y ago
Newest
by launch date
C4 Large Letter Postal Boxes 100 Pack Strong Corrugated Cardboard Mailing Boxes PIP Large Letter Size Flat Packed Shipping Boxes for Documents E-commerce
- Price
- £14.95
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 1mo ago

C6 A6 Postal Pip Boxes - Large Letter & Flat Pack Boxes Size 16.3cm x 11.2cm x 2cm - Pack of 25 (White)
- Price
- £8.20
- Rating
- 4.7/5
- Reviews
- 7
- Age
- 1y ago

iDEALS UK PACKAGING LTD PINK C5 A5 size box large letter cardboard shipping mailing postal PIP. Internal size: 23cm x 16cm x 2cm (25)
- Price
- £10.71
- Rating
- 4.7/5
- Reviews
- 32
- Age
- 2y ago

C6 A6 PiP Shipping Mailing Postal Large Letter box 160 x 111 x 19mm (16 x 11 x 1.9 cm) - Eco-Friendly and 100% Recyclable. (50)
- Price
- £8.49
- Rating
- 4.6/5
- Reviews
- 63
- Age
- 4y ago

C6 A6 PiP Shipping Mailing Postal Large Letter box 160 x 111 x 19mm (16 x 11 x 1.9 cm) - Eco-Friendly and 100% Recyclable. (100)
- Price
- £13.04
- Rating
- 4.6/5
- Reviews
- 63
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take 52% of clicks. Leaders hold, but buyers still shop past them.
Brands
11 falling
Sellers
25
Top-5 brand share
78%
Top 20: 100%
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.
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 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
What buyers praise, what they complain about and why they send it back, from the reviews.
Complain
Bad quality
The quality of these boxes are awful
It feels like they are poorly made and badly cut
they are flimsy
not as sturdy as I thought
Bit flimsy
Thin
The cardboard is very thin
Thickness and atrudiness also not great
dont assemble well
dont fold together very well
do not go together well
Overall I doubt its fit for the intended purpose
Small letter size boxes
A lot smaller than expected
Love
perfect size
Perfect size for sending trading cards
True to size
Excellent product
Great quality boxes
Great quality for money
Great value
Half the price of previous boxes I was using
Good value
Very sturdy
Excellent strong boxes
strong cardboard box
Works as advertised
as described
Just what I needed
Return
0.5% Return rate 76% Fixable by listing
Overall I doubt its fit for the intended purpose
Small letter size boxes
A lot smaller than expected
Bad quality
The quality of these boxes are awful
It feels like they are poorly made and badly cut
they are flimsy
not as sturdy as I thought
Bit flimsy
Thin
The cardboard is very thin
Thickness and atrudiness also not great
Keep looking
Related niches
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Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Large Letter Postal Boxes questions
Answered from the same tracked data.









