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Muji Pens

Fail

Prices span $5.02–$14.14, mostly outside the sweet spot, so Muji Pens is a Fail.

Flapen Score
36
36 / 100
Ranks 689 of 835 Stationery & Office Supplies niches · −11 vs the category median of 47
Market size
£68K/yr246K searches / yr
90-day growth
-5.8%search demand this quarter
Competition
64%top-5 click share · 7 brands · 63 sellers

Flapen Score

Muji Pens against its category

The dotted line is the Stationery & Office Supplies average. Past it, Muji Pens is stronger. Inside it, weaker.

36Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Muji Pens market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Muji Pens 246K times last year and spent an estimated £68K. The top 5 brands take 93% of clicks. Demand peaks in Apr–Sep. Flapen scores it 36 out of 100, a Fail.

01 · Demand

2.8% of searches ended in a purchase last week.

Shoppers searched for this 246K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 2.8% of those searches ended in a purchase. Searches in the last 90 days moved -5.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated £68K a year.

Searches, last 12 months
246K
Growth, 90 days vs prior 90
-5.8%
Conversion, latest week
2.8%
Market size, estimated
£68Ka year
Peak month
April4.3× the quietest month
Top search term
muji pens104K searches a year

02 · Price

A sale here is worth £10.01.

Listings sell for £10.01 on average, from £5.02 to £14.14. Amazon reports units sold in ranges. This niche sold 8K to 10K a year. The average listing sells 250 to 500 of them. At £10.01 that is £3K to £5K a year per listing.

Average price
£10.01under the $15 to $100 sweet spot
Price range
£5.02–£14.14
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
8K–10K
Units per listing a year
250–500
Revenue per listing a year
£3K–£5K
Returns
0.4%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is low.

81% of listings pay for placement with sponsored ads. 94% ship with Prime. On an average day, 2.6% of listings are out of stock. The average listing ranks #303 within Pens, Pencils & Writing Supplies. It carries 855 reviews at 4.43 stars, so a new listing needs social proof before a better product.

Sponsored listings
81%
Prime listings
94%
Out of stock, average day
2.6%
Average rank
#303in Pens, Pencils & Writing Supplies
Average rating
4.43 starsAmazon United Kingdom average 4.36 stars
Average reviews
855per listing
Listings tracked
16

04 · Newcomers

Brands here are settling in.

The brands on the shelf have sold for 45 months on average, so the names here are settling in.

Launched, last 12 months
0
Successful launches
0Amazon's first-year sales bar
Average brand age
45 months

Products

Top Muji Pens products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Competition

Competition: brands, sellers & click share

The top 5 products take 64% of clicks. Leaders hold, but buyers still shop past them.

£0£7K£14K£20K£27K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

7 rising

Sellers

63

Top-5 brand share

93%

Top 20: 100%

Top-5 click share

64%

Top 20: 100%

Open market

3%

  • MUJI55%
  • Muji12%
  • ABEIER10%
  • Hometric8%
  • Shezi & co8%
  • Generic5%
  • Open — no brand owns it (1 brand, 3%)

Demand

Muji Pens search demand

Weekly searches over the year, seasonality beneath. Pick a range.

30K20KSpike '24Holiday '24Prime Day '25Spike '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Apr, Sep · busiest ÷ quietest = 4.3×

Search terms

Top Muji Pens search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • muji pens104K/yr
  • muji90K/yr
  • muji pens 0.522K/yr
  • muji pen17K/yr
  • muji stationery5K/yr
  • muji gel pens3K/yr
  • muji5K/yr

Reviews and returns

What reviews say buyers love and hate about Muji Pens

What buyers praise, what they complain about and why they send it back, from the reviews.

Complain

Durability22%−0.09

one pen does not last long

but run out very quick

Quality-Overall20%−0.08

A bit confused with all the good reviews

the quality is nowhere close to what i was expecting

I can only think its a manufacturing problem or low Quality

Writing Experience15%+0.16

Writing is not smooth

Completely unusable, not smooth writing at all

Hard Feel11%−0.08

Not very smooth

Ink Leakage7%−0.05

Bad Ink Flow

Ink flow is very bad

Love

Writing Experience22%+0.16

Beautiful writing

nice for writing

Writes smoothly

Quality-Overall17%−0.08

Brilliant Quality

Superb product

Overall, i feel that this product is:

Pen/Pencil Quality12%+1.68

Great pens

Best pen

Good pens, still use some after 2 years or so

Value For Money9%

Really good vale at under £6 for 12

Value for money

Good value

Ease Of Use8%+0.31

A pleasure to use

Easy to use pens

Easy to write with

Return

0.4% Return rate 23% Fixable by listing

Functionality-Overall15%▁▁▃█▅▇
Ink Refill13%█▁▆▁▅▁
Size-Overall13%▁▁█▁▄▂
Writing Experience10%▁▁▄█▅▆

Writing is not smooth

Completely unusable, not smooth writing at all

Quality-Overall10%█▁▅▆▁▃

A bit confused with all the good reviews

the quality is nowhere close to what i was expecting

I can only think its a manufacturing problem or low Quality

FAQ

Common Muji Pens questions

Answered from the same tracked data.