Is letter box profitable to sell on Amazon United Kingdom?

The niche generates £723K/yr across 50 tracked products. 4 of 7 products launched in the last 360 days are still selling. 90-day search growth is -11.7%. Flapen's verdict: Worth a look (58/100).

How competitive is the letter box niche?

25 brands and 44 sellers compete. The top 5 products take 32% of clicks and top 5 brands hold 65% of demand.

What do buyers complain about in letter box?

Top complaints mined from reviews: Quality-Overall, Size-Overall, Rusts/Corrodes. The return rate is 3.3%.

When does demand for letter box peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the letter box niche?

Listings span £7.36–£80.66; the average listing price is £18.32 (sweet spot $15–$100). The average incumbent carries 1,733 reviews — the moat a new listing must climb.

letter box

Worth a look

Shows sweet-spot pricing room ($7.36–$80.66), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Price range

Great£7.36–£80.66

cheapest to priciest tracked listing — scored on the share inside $15–$100

Competition

Great32%

top-5 click share — an open shelf

Avg price

Great£18.32

avg listing price — sweet spot $15–$100

Market size

Good£723K

£723K/yr · 1.4M searches

Brand share

Good65%

top-5 brand share — brands hold most of the demand

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Review moat

Okay1,732.66

avg incumbent reviews — the moat a new listing must climb

Returns

Okay3.3%

return rate — above 5% kills the launch gate

Conversion

Okay2.8%

search→purchase rate — share of searches ending in a sale

Growth

Bad-11.7%

90-day search growth — must beat 0% to launch

According to Flapen's Amazon United Kingdom niche tracking, letter box is a £723K/yr Amazon United Kingdom market (1.4M searches/yr). The top 5 brands hold 65% of demand. Verdict: Worth a look — 58/100.

Data updated Jul 22, 2026 · scored weekly · How we score niches

letter box market data

Units sold / yr: 30K–40K; avg 250–500/product
Revenue / yr: £550K–£733K; units × avg price
Conversion rate: 2.8%
Avg BSR: #23
Page quality: 0%
Prime: 76%
Sponsored: 96%
Out of stock: 10.0%
Avg brand age: 47 months
Avg seller age: 179 days

Competition & brand share

Clicks spread well past the top 5 (32% combined) — an open shelf where new products get seen.

Brands

25 falling

Sellers

Top-5 brand share

65%

Top 20: 97%

Top-5 click share

32%

Top 20: 71%

Open market

30%

SONGMICS32%
UAP11%
Burg-Wächter8%
GREABER7%
keypak6%
Bwintech5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -11.7% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top letter box search terms

letter box418K/yr -11.3%2.1% conv.
post box289K/yr -10.5%2.0% conv.
post boxes wall mounted waterproof117K/yr -15.7%2.5% conv.
letterbox105K/yr -14.0%2.0% conv.
letter box flap64K/yr -13.6%1.5% conv.
mail box54K/yr -2.6%1.6% conv.
postbox43K/yr -8.3%2.3% conv.
letterboxes & accessories38K/yr -19.5%0.3% conv.
post box wall mounted34K/yr -24.2%2.3% conv.
postbox for outside wall33K/yr -12.3%2.6% conv.

All search terms

Top letter box 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.

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

SONGMICS Post Box Wall Mounted Letterbox Mailbox with Sloped Roof Copper Lock Cylinder Swivel Cap Viewing Windows Nameplate Easy to Install 9 x 21.8 x 31.8 cm Grey GMB032GZ01

SONGMICS£15.624.3★2,562 rev

Post Boxes Wall Mounted Waterproof Steel Mail Box with 2 Keys Lockable Weatherproof Large Letter Lostal Boxes for Outside or Door 9 x 21.5 x 32 cm size

GREABER£15.634.5★409 rev

SONGMICS Post Box Wall Mounted Letterbox Mailbox Copper Lock Cylinder with Swivel Cap Viewing Windows Nameplate Easy to Install 11.5 x 25.5 x 39.5 cm Anthracite Grey GMB031G01

SONGMICS£20.254.3★2,562 rev

Xfort MailPlate 12 Letterplate Polished Chrome Premium Draught Proof Postal Letterbox Telescopic Sleeved Letter Box for uPVC Doors with 20-40mm Door Thickness.

UAP£11.874.3★3,697 rev

lisetar Post Box Wall Mounted Steel Mail Box with Combination Lock - Weather-Resistant 3 Viewing Windows Rain Cover Lockable for Outside Black 40 x 25 x 10 cm

lisetar£27.174.3★215 rev

Newest

by launch date

SONGMICS Modern Mailbox Lockable Wall-Mounted Post Letter Box with Newspaper Holder Easy to Install 9.5 x 29 x 31 cm Anthracite Grey GMB055G101

SONGMICS£17.763,589 rev

3mo ago

Amazon Basics Post Box Wall Mount Lockable Letter Box Durable Galvanised Steel for Daily Post and Small Parcels 32.5 x 21.5 x 9.0 cm Black

Amazon Basics£10.12316 rev

10mo ago

SONGMICS Post Box Wall Mounted Letterbox Mailbox with Sloped Roof Copper Lock Cylinder Swivel Cap Viewing Windows Nameplate Easy to Install 9 x 21.8 x 31.8 cm Grey GMB032GZ01

SONGMICS£15.622,562 rev

10mo ago

SONGMICS Post Box Wall Mounted Letterbox Mailbox with Sloped Roof Copper Lock Cylinder Swivel Cap Viewing Windows Nameplate Easy to Install 9 x 21.8 x 31.8 cm Black GMB032BZ01

SONGMICS£15.712,562 rev

10mo ago

Burg Wachter Style Wall Mounted Steel Lockable Weather Resistant Post Box 31x21.5x7cm - Black

Burg-Wächter£13.3470 rev

1y ago

What buyers say about letter box

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall21%

“Excellent product”

Size-Overall19%

“Easy fit”

Value For Money11%

“Good value for money”

Advertised Vs Actual Product10%

“As described”

Assembly/Installation9%

“Easy to install”

Strength5%

“Easy to install and very sturdy”

Design-Overall4%

“Lovely design”

Ease Of Use4%

“Ease of use”

Mounting2%

“Easy to mount”

Color2%

“Lovely precise colour”

What buyers complain about

Quality-Overall16%

“Rubbish quality”

Size-Overall12%

“Too small”

Rusts/Corrodes9%

“Started rusting after a few months”

Leak-Proof7%

“Leaking letterbox”

Durability6%

“Durability questionable”

Water Resistance6%

“Not rainproof”

Locking Mechanism4%

“Lock doesn't work”

Assembly/Installation3%

“Very Difficult to install”

Value For Money2%

“its over priced”

Moist/Dry2%

“Very Wet”

Top return reasons

Size-Overall72%

Color6%

Defective Material/Parts4%

Compatibility-Overall3%

Quality-Overall2%

Functionality-Overall1%

Locking Mechanism1%

Thickness1%

Strength1%

Mechanism Issues1%

Common questions

Is letter box profitable to sell on Amazon United Kingdom?: The niche generates £723K/yr across 50 tracked products. 4 of 7 products launched in the last 360 days are still selling. 90-day search growth is -11.7%. Flapen's verdict: Worth a look (58/100).
How competitive is the letter box niche?: 25 brands and 44 sellers compete. The top 5 products take 32% of clicks and top 5 brands hold 65% of demand.
What do buyers complain about in letter box?: Top complaints mined from reviews: Quality-Overall, Size-Overall, Rusts/Corrodes. The return rate is 3.3%.
When does demand for letter box peak?: Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the letter box niche?: Listings span £7.36–£80.66; the average listing price is £18.32 (sweet spot $15–$100). The average incumbent carries 1,733 reviews — the moat a new listing must climb.

letter box

letter box market data

Competition & brand share

Demand & seasonality

Top letter box search terms

Top letter box products on Amazon

Top sellers

Newest

Trending

What buyers say about letter box

What buyers love

What buyers complain about

Top return reasons

Common questions

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