hobonichi weeks cover
Skip itSoft demand (-55.4% this quarter) — this niche doesn't clear our bar today.
Avg price
Incredible$34.04avg listing price — sweet spot $15–$100
Review moat
Great207.75avg incumbent reviews — the moat a new listing must climb
Price range
Great$5.25–$69.01cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good47%top-5 click share — leaders hold, buyers still browse
Returns
Good2.6%return rate — above 5% kills the launch gate
Market size
Okay$181K$181K/yr · 260K searches
Conversion
Okay2.1%search→purchase rate — share of searches ending in a sale
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Brand share
Bad93%top-5 brand share — brand-locked demand
Growth
Bad-55.4%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, hobonichi weeks cover is a $181K/yr Amazon United States market (260K searches/yr). The top 5 brands hold 93% of demand. Verdict: Skip it — 41/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
hobonichi weeks cover market data
- Units sold / yr
- 10K–13K
- avg 250–500/product
- Revenue / yr
- $340K–$426K
- units × avg price
- Conversion rate
- 2.1%
- Avg BSR
- #1,979
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 68%
- Out of stock
- 6.5%
- Avg brand age
- 31 months
- Avg seller age
- 174 days
Competition & brand share
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.Brands
8 flat
Sellers
26
Top-5 brand share
93%
Top 20: 100%
Top-5 click share
47%
Top 20: 90%
Open market
3%
- ほぼ日57%
- Moterm12%
- Ox Knight11%
- ALLAX7%
- DILVREWA5%
- Noboty4%
- Open — no brand owns it (2 brands, 3%)
Demand
Weekly Amazon search volume, last 31 weeks — -55.4% search growth over the last 90 days.Top hobonichi weeks cover search terms
- hobonichi weeks cover163K/yr
- hobonichi weeks april start12K/yr
- hobonichi weeks clear cover22K/yr
- weeks cover9K/yr
- weeks planner cover6K/yr
- hobonichi techo weeks cover4K/yr
- hobonichi clear cover8K/yr
- weeks planner 20267K/yr
- hobonichi weeks mega cover10K/yr
- hobonichi weeks cover clear7K/yr
Top hobonichi weeks cover 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
Hobonichi Techo Accessories Clear Cover for Weeks
ほぼ日$9.054.8★2,493 rev
Hobonichi Techo Weeks Cover Alettone: Gray (Tall & Slim Size Cover Only)
ほぼ日$26.334.5★16 rev
Jelly Cover for Hobonichi Weeks Planner - 8.2x7.7 Inches Clear Plastic Planner Cover Compatible with April Start & Mega Planners Glitter Star Design
ALLAX$9.064.4★25 rev
Moterm Leather Cover for Hobonichi Weeks - Fits Hobonichi Weeks/Weeks Mega with Back Pocket (Pebbled-Olive)
Moterm$40.264.8★605 rev
Clear Cover for Hobonichi Weeks Planner- 8.0x7.7 Inches Plastic Cover for Weeks Book Protective Sleeves Compatible with April Start & Mega Planners(1-Pack)
DILVREWA$7.854.6★178 rev
Newest
by launch date
Anti-Yellowing Clear Planner Cover for Hobonichi Weeks & Mega Perfect Fit Not Flimsy Flexible & Durable Reinforced Pen Loop & Pockets Water-Resistant Planner Sleeve (1-Pack)
Noboty$5.2530 rev
Hobonichi Techo 2026 Spring Weeks Moomin: Little My Everywhere! (Japanese Tall & Slim April Start)
ほぼ日$38.7211 rev
Hobonichi Techo 2026 Spring Weeks Colors: Sky Mist (Japanese Tall & Slim April Start)
ほぼ日$35.9151 rev
Hobonichi Techo 2026 Spring Weeks Colors: Antique Green (Japanese Tall & Slim April Start)
ほぼ日$35.7851 rev
Hobonichi Techo 2026 Spring Weeks Moomin: To the Outdoor Dance Hall (Japanese Tall & Slim April Start)
ほぼ日$39.438 rev
Trending
90-day click momentumAnti-Yellowing Clear Planner Cover for Hobonichi Weeks & Mega Perfect Fit Not Flimsy Flexible & Durable Reinforced Pen Loop & Pockets Water-Resistant Planner Sleeve (1-Pack)
Noboty$5.254.3★
Hobonichi Techo 2026 Spring Weeks Moomin: Little My Everywhere! (Japanese Tall & Slim April Start)
ほぼ日$38.724.6★
Moterm Leather Cover for Hobonichi Weeks - Fits Hobonichi Weeks/Weeks Mega with Back Pocket (Pebbled-Olive)
Moterm$40.264.8★
Hobonichi Techo 2026 Spring Weeks Colors: Sky Mist (Japanese Tall & Slim April Start)
ほぼ日$35.914.8★
Jelly Cover for Hobonichi Weeks Planner - 8.2x7.7 Inches Clear Plastic Planner Cover Compatible with April Start & Mega Planners Glitter Star Design
ALLAX$9.064.4★
What buyers say about hobonichi weeks cover
What buyers praise and complain about, mined from review topics.What buyers love
“Fit perfectly”
“Excellent product”
“Excellent value”
“My favorite planner”
“still working well”
“And the color is clear”
“Product as stated”
“Very well designed”
“it has very good material”
“Easy to use”
What buyers complain about
“Too big”
“Not as thick as an OEM hobonichi cover”
“Its almost more beige than pink unfortunately”
“its just plastic”
“Does not fit a travelers notebook”
“heavy”
“kind of flimsy”
“the smell was completely gone”
“IT slips tight on”
“Because I have personal information on the cover of mine I could not show it in photos”
Top return reasons
Common questions
- Is hobonichi weeks cover profitable to sell on Amazon United States?
- The niche generates $181K/yr across 28 tracked products. 2 of 11 products launched in the last 360 days are still selling. 90-day search growth is -55.4%. Flapen's verdict: Skip it (41/100).
- How competitive is the hobonichi weeks cover niche?
- 8 brands and 26 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 93% of demand.
- What do buyers complain about in hobonichi weeks cover?
- Top complaints mined from reviews: Size-Overall, Thickness, Color. The return rate is 2.6%.
- What does it cost to enter the hobonichi weeks cover niche?
- Listings span $5.25–$69.01; the average listing price is $34.04 (sweet spot $15–$100). The average incumbent carries 208 reviews — the moat a new listing must climb.