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hobonichi weeks cover

Skip it52/100

a small market ($181K/yr) — hobonichi weeks cover doesn't clear our bar today.

Market/yr

$181K

Growth (1y)

+342.1%

Products

28

Brands

8

was 8 a year ago

Sellers

26

Price range

$5.25–$69.01

Returns

2.6%

Rating

4.7★

52/100

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Scored 52/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns
Market size
9
×0.30
Growth
88
×0.30
Competition
64
×0.20
Quality gap
20
×0.10
Returns
79
×0.10

Demand

Weekly Amazon search volume, last 31 weeks — +342.1% year over year.
43K22KHoliday '25Spike '26Dec '25Jan '26Feb '26Mar '26Apr '26May '26

Competition

57%ほぼ日
  • ほぼ日57%
  • Moterm12%
  • Ox Knight11%
  • ALLAX7%
  • DILVREWA5%
  • Noboty4%
  • Other (2 brands)3%

The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them. 8 brands and 26 sellers compete here.

Brands

8 flat

was 8 a year ago

Sellers

26

Top 5 brand share

93%

#ProductBrandPriceRatingReviewsClick shareTrend
1ほぼ日$9.054.8★2,49321%falling

Product shelf

All 28 tracked products in this niche.

Reviews

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

What buyers love

Size-Overall31%

“Fit perfectly”

Quality-Overall8%

“Excellent product”

Value For Money6%

“Excellent value”

Document Organizing/Classification6%

“My favorite planner”

Durability5%

“still working well”

Color4%

“And the color is clear”

Advertised Vs Actual Product4%

“Product as stated”

Design-Overall3%

“Very well designed”

Material Quality3%

“it has very good material”

Ease Of Use3%

“Easy to use”

What buyers complain about

Size-Overall17%

“Too big”

Thickness7%

“Not as thick as an OEM hobonichi cover”

Color5%

“Its almost more beige than pink unfortunately”

Material Quality4%

“its just plastic”

Compatibility-Overall3%

“Does not fit a travelers notebook”

Weight Heavy3%

“heavy”

Strength3%

“kind of flimsy”

Smell2%

“the smell was completely gone”

Grip1%

“IT slips tight on”

Advertised Vs Actual Product1%

“Because I have personal information on the cover of mine I could not show it in photos”

Top return reasons

  • Size-Overall43%
  • Color9%
  • Advertised Vs Actual Product9%
  • Value For Money7%
  • Material Quality5%
  • Defective Material/Parts3%
  • Quality-Overall3%
  • Compatibility-Overall2%
  • Product Condition2%
  • Weight Heavy2%

Data scraped July 9, 2026 · Marketplace baseline: 4.4★ avg rating · $22.79 median price · 2.2% median returns across 14,944 tracked niches.