4x6 cardstock
Skip itStrong incumbent ratings (4.7★) — this niche doesn't clear our bar today.
Conversion
Great7.8%search→purchase rate — share of searches ending in a sale
Returns
Great1.9%return rate — above 6% kills the launch gate
Brand share
Good73%top-5 brand share — brands hold most of the demand
Review moat
Okay1,798avg incumbent reviews — the moat a new listing must climb
Avg price
Okay$10.73avg listing price — sweet spot $15–$100
Growth
Okay+7.8%90-day search growth — must beat 0% to launch
Market size
Okay$143K$143K/yr · 172K searches
Price range
Okay$5.72–$19.03cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Okay68%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Competition
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.Brands
18 falling
Sellers
52
Top-5 brand share
73%
Open market
22%
- TEETOOKEA22%
- SUMERX18%
- Amazon Basics16%
- Smanzu10%
- Nitelemn7%
- Goefun5%
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
100 Pack 4x6 White Cardstock Paper 92lb/250GSM Heavyweight Blank Card Thick Index Card for Printer Postcards Wedding Invitation Thankyou Cards
TEETOOKEA$6.864.7★306 rev
100 Sheets 4 X 6 White Cardstock Heavyweight Cardstock Sheets Blank Invitation Paper Greeting Cards Printable 75lb Cover 200 GSM/White
SUMERX$6.904.5★362 rev
Amazon Basics Blank Index Cards for Studying and Note Taking White 4 x 6 1000 Count (Pack of 2)
Amazon Basics$14.084.7★32,126 rev
Smanzu 50 Pack 4x6 White Cardstock Paper Blank Thick Heavyweight 92lb Card Stock for Making Index Cards Invitations cards Postcards
Smanzu$5.994.8★212 rev
100 Sheets Rainbow Colored 92LB/250gsm Cardstock (4 x 6Inch)
Nitelemn$7.964.6★232 rev
Newest
by launch date
Guakicae 60 Sheets Cream Cardstock 4 x 6 Ivory Paper 300gsm/110lb Heavyweight Flat Off White Card Stock Certificates Paper for Card Making Business Cards Postcards Scrapbooking Menus
Guakicae$9.29108 rev
Vellumasx 50 Sheets Textured Paper 4 x 6 inch Cold Press Watercolor Paper 140lb/300 GSM Handmade Sheet for Watercolors Cards Crafts Wedding Invitations
Vellumasx$12.28125 rev
200 Sheets 4 X 6 White Cardstock Heavyweight Cardstock Sheets Blank Invitation Paper Greeting Cards Printable 75lb Cover 200 GSM/White
SUMERX$12.75362 rev
50 Sheets Deckled Edge Paper 4 x 6inch 160 GSM Handmade Paper Rough/Textured Watercolor Paper for Wedding Invitations Cards Crafts
Prudiut$8.68341 rev
Geosar 100 Sheets Linen Cardstock 4 x 6 Invitation Heavy Weight Printer Paper 92lb 250GSM Index Cardstock for Printer Postcards Blank Flash Note Greeting(Cream)
Geosar$12.7522 rev
Trending
90-day click momentum200 Sheets 4 X 6 White Cardstock Heavyweight Cardstock Sheets Blank Invitation Paper Greeting Cards Printable 75lb Cover 200 GSM/White
SUMERX$12.754.5★
Guakicae 60 Sheets Cream Cardstock 4 x 6 Ivory Paper 300gsm/110lb Heavyweight Flat Off White Card Stock Certificates Paper for Card Making Business Cards Postcards Scrapbooking Menus
Guakicae$9.294.6★
Geosar 100 Sheets Linen Cardstock 4 x 6 Invitation Heavy Weight Printer Paper 92lb 250GSM Index Cardstock for Printer Postcards Blank Flash Note Greeting(Cream)
Geosar$12.755.0★
S&O 300gsm 4x6 Postcard Paper Cardstock(Both Sides Blank) For Art or Clear Thank Notes for MailingSet of 60 White Blank Invitation Sheets Printable Stationery Set Bulk greeting Cards Pack
Sweetzer & Orange$6.834.5★
Hysiwen 50 Sheets White Card Stock 4 x 6 Inches 250gsm/92 lb Blank Cardstock Paper for Making Postcards Invitation Cards Greeting Cards Paper Crafts or Drawing(W46)
Hysiwen$5.724.7★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +7.8% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Quality cardstock”
“As described”
“they printed easily”
“Affordable”
“Clean, great paper”
“Color accuracy is correct”
“thick card stock”
“Good quality and economical material”
“Perfect size”
“they're not super flimsy either”
What buyers complain about
“This was not much thicker than regular paper”
“And when it comes down to paper I don't care about quality unless it's part of one of my crafting projects”
“Not appropriate for anything requiring strength or quality”
“Very flimsy, more so than any index card I've purchased in the last 20 years”
“not to give as a gift”
“The paper feels super expensive”
“Color is muted and the paper is too thin for greeting cards, art prints, or postcards”
“Gets jammed”
“Its unfortunate because I was hoping to use these as part of a flip book for photos”
“Kind of rough texture”