c6 envelopes
Worth a lookShows low returns (0.4%), but pricing outside the sweet spot ($6.81 avg) keeps it on the watch list.
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Conversion
Great10.3%search→purchase rate — share of searches ending in a sale
Competition
Great36%top-5 click share — an open shelf
Review moat
Great479.22avg incumbent reviews — the moat a new listing must climb
Brand share
Good60%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Market size
Okay£113K£113K/yr · 161K searches
Growth
Bad-4.2%90-day search growth — must beat 0% to launch
Price range
Bad£2.08–£18.22cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Bad£6.81avg listing price — sweet spot $15–$100
According to Flapen's Amazon United Kingdom niche tracking, c6 envelopes is a £113K/yr Amazon United Kingdom market (161K searches/yr). The top 5 brands hold 60% of demand. Demand peaks in Nov–Dec. Verdict: Worth a look — 54/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
c6 envelopes market data
- Units sold / yr
- 15K–20K
- avg 250–500/product
- Revenue / yr
- £102K–£136K
- units × avg price
- Conversion rate
- 10.3%
- Avg BSR
- #107
- Page quality
- 0%
- Prime
- 86%
- Sponsored
- 86%
- Out of stock
- 4.8%
- Avg brand age
- 44 months
- Avg seller age
- 186 days
Competition & brand share
Clicks spread well past the top 5 (36% combined) — an open shelf where new products get seen.Brands
28 rising
Sellers
31
Top-5 brand share
60%
Top 20: 94%
Top-5 click share
36%
Top 20: 74%
Open market
33%
- Karma Krafts19%
- Triplast16%
- Double Dragon9%
- House of Card & Paper8%
- JagerGreen8%
- ARK7%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -4.2% search growth over the last 90 days.Peak months: Nov, Dec · busiest ÷ quietest = 1.9×
Top c6 envelopes search terms
- a6 envelopes71K/yr
- c6 envelopes42K/yr
- envelopes c613K/yr
- 6x4 envelopes11K/yr
- envelopes a67K/yr
- c6 envelopes white6K/yr
- a6 envelopes white5K/yr
- a6 envelope3K/yr
- postcard envelopes2K/yr
Top c6 envelopes 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Double Dragon 50-Pack A6 C6 Manilla Hard Board Backed Envelopes | 162mm x 114mm | Please Do Not Bend Printed | Padded & Tamper-Proof | Self-Seal Closure
Double Dragon£6.234.7★480 rev
Triplast 100 x C6 White Self Seal Security Envelopes (Size: 114x162mm) | Fully Opaque Self Sealing & Printer Safe Mailing Paper Envelopes | Ideal for Everyday Home Office & Commercial Use
Triplast£5.114.5★1,869 rev
100 x ARK C6 Premium White Greetings Card Envelope 100gsm 114mm x 162mm
ARK£6.854.7★1,521 rev
House of Card & Paper C6 Envelope - White (Pack of 25) HCP92
House of Card & Paper£2.084.6★1,071 rev
Karma Krafts C6 Ivory Envelopes 114 x 162mm 100gsm Gummed Envelopes for Cards & Invitations Pack of 50
Karma Krafts£6.144.5★16 rev
Newest
by launch dateDouble Dragon 50-Pack A6 C6 Manilla Hard Board Backed Envelopes | 162mm x 114mm | Please Do Not Bend Printed | Padded & Tamper-Proof | Self-Seal Closure
Double Dragon£6.23480 rev
RFE Pack of 250 - C6 / A6 White Mailing Envelopes Self Seal for Posting mailing Home Office Ecommerce and Business 80gsm 114 x 162mm
RFE£12.433 rev
JAGERGREEN 50 Pack 4 x 6 Self Seal Envelopes White Blank A6 C6 Envelopes for Wedding Invitation Envelope 108 x 159mm 150gsm for Greeting Cards Birthday Baby Shower Thank You Cards Anniversary
JagerGreen£10.63625 rev
JAGERGREEN 50 Pack 4 x 6 Self Seal Envelopes Green Blank A6 C6 Envelopes for Wedding Invitation Envelope 108 x 159mm 150gsm for Greeting Cards Birthday Baby Shower Thank You Cards Anniversary
JagerGreen£10.56625 rev
Pack of 200 C6 Kraft Fleck Envelopes 114mm x 162mm Vintage Brown Self-Seal C6 Kraft Envelopes for Weddings Invitations Cards by Toniwa
Toniwa£11.143 rev
Trending
90-day click momentum
Officely C6 Self Seal Wallet Envelopes 90 GSM 114mm x 162mm White - Pack of 25
Officely£2.264.3★
Pack of 200 C6 Kraft Fleck Envelopes 114mm x 162mm Vintage Brown Self-Seal C6 Kraft Envelopes for Weddings Invitations Cards by Toniwa
Toniwa£11.145.0★
100 Pack White Mini Envelopes 4x2.75 - Small Gift Card Envelopes for Weddings Baby Showers Thank You Notes RSVP Cards Photos and Any
amassan£6.594.6★
Karma Krafts C6 Recycled Kraft Fleck Envelopes 114 x 162mm 110gsm Gummed Brown Envelopes for A6 Cards & Invitations Pack of 25
Karma Krafts£4.185.0★
RFE Pack of 250 - C6 / A6 White Mailing Envelopes Self Seal for Posting mailing Home Office Ecommerce and Business 80gsm 114 x 162mm
RFE£12.434.3★
What buyers say about c6 envelopes
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality”
“Product was as advertised”
“good value”
“nice colour”
“Strong, Secure and Perfect for Important Mail”
“the size is good”
“Thick”
“Nice and thick paper”
“Ideal for bills”
“Great for sending cards very secure”
What buyers complain about
“Not the colours shown”
“Will not stick down very well”
“Horrid quality”
“Look nothing like the pictures”
“Thickness was minimal although the appearance color was as described”
“making them unusable”
“paper screwed up”
“some are dirty”
“Size not true 4x6 A6 UK size”
“All colours were washed out and muted”
Top return reasons
Common questions
- Is c6 envelopes profitable to sell on Amazon United Kingdom?
- The niche generates £113K/yr across 50 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -4.2%. Flapen's verdict: Worth a look (54/100).
- How competitive is the c6 envelopes niche?
- 28 brands and 31 sellers compete. The top 5 products take 36% of clicks and top 5 brands hold 60% of demand.
- What do buyers complain about in c6 envelopes?
- Top complaints mined from reviews: Color, Adhesion/Stickiness, Quality-Overall. The return rate is 0.4%.
- When does demand for c6 envelopes peak?
- Demand peaks in Nov–Dec; the busiest month runs 1.9× the quietest.
- What does it cost to enter the c6 envelopes niche?
- Listings span £2.08–£18.22; the average listing price is £6.81 (sweet spot $15–$100). The average incumbent carries 479 reviews — the moat a new listing must climb.