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3d pen filament refills

Skip it

Soft demand (-46.9% this quarter) — this niche doesn't clear our bar today.

Market size 18Growth 2Conversion 84Competition 61Returns 85Price range 59Avg price 36Brand share 81Review moat 48Quality gap 37

Returns

Great1.5%

return rate — above 5% kills the launch gate

Conversion

Great9.2%

search→purchase rate — share of searches ending in a sale

Brand share

Great54%

top-5 brand share — no brand owns this niche

Competition

Good49%

top-5 click share — leaders hold, buyers still browse

Price range

Good£5.18–£28.86

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Okay1,652.61

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Avg price

Okay£10.37

avg listing price — sweet spot $15–$100

Market size

Bad£71K

£71K/yr · 74K searches

Growth

Bad-46.9%

90-day search growth — must beat 0% to launch

According to Flapen's Amazon United Kingdom niche tracking, 3d pen filament refills is a £71K/yr Amazon United Kingdom market (74K searches/yr). The top 5 brands hold 54% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Skip it — 48/100.

Data updated Jul 21, 2026 · scored weekly · How we score niches

3d pen filament refills market data

Units sold / yr
6K–8K
avg 100–250/product
Revenue / yr
£62K–£83K
units × avg price
Conversion rate
9.2%
Avg BSR
#258
Page quality
0%
Prime
100%
Sponsored
82%
Out of stock
10.0%
Avg brand age
24 months
Avg seller age
266 days

Competition & brand share

The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.

Brands

22 rising

Sellers

32

Top-5 brand share

54%

Top 20: 98%

Top-5 click share

49%

Top 20: 92%

Open market

41%

  • Kretrum21%
  • Yungden12%
  • ytorgr9%
  • Uzone7%
  • Dr.JIEER6%
  • Helweet5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -46.9% search growth over the last 90 days.
7K5KSpike '24Holiday '24Prime Day '25Spike '25Black Friday '25Holiday '25SepDecMarJunAugNovMarMay

Peak months: Jan, Nov, Dec · busiest ÷ quietest = 5.8×

Top 3d pen filament refills search terms

  • 3d pen filament refills40K/yr
  • 3d pen refills14K/yr
  • 3d pen filament14K/yr
  • scrib3d pen filament refills6K/yr
All search terms

Top 3d pen filament refills 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.

0%4%£3K8%£6K12%£8K16%£11K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

All 24 tracked products in this niche — three views at once, no toggling.

What buyers say about 3d pen filament refills

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

What buyers love

Color21%

“The colours are vibrant”

Value For Money17%

“Great value”

Quality-Overall11%

“The quality of filament is good”

3D Effect11%

“Works well in the 3Doodler”

Ease Of Use7%

“Easy to use”

Fun/Entertainment Experience5%

“It is such great fun”

Advertised Vs Actual Product3%

“As expected”

Display Colors3%

“Good variety of colours included”

Material Quality2%

“how consistent the material is”

Design-Overall2%

“they love to make many cool designs”

What buyers complain about

Durability20%

“broke after 1 use”

3D Effect10%

“Does not work with 3Doodler”

Color8%

“it started to clog with the colours”

Quality-Overall6%

“Terrible”

Value For Money6%

“Not worth the money”

Functionality-Overall6%

“Didnt work”

Ease Of Use6%

“its a bit hard to do things”

Size-Overall4%

“Hand size might be an issue check sizes first before ordering R”

Connectivity-Overall4%

“This is not wireless”

Advertised Vs Actual Product2%

“Misinformation”

Top return reasons

Functionality-Overall26%
Size-Overall14%
Compatibility-Overall11%
Defective Material/Parts8%
Durability8%
3D Effect5%
Advertised Vs Actual Product4%
Quality-Overall3%
Jamming/Clogging2%
Gifting Purpose2%

Common questions

Is 3d pen filament refills profitable to sell on Amazon United Kingdom?
The niche generates £71K/yr across 28 tracked products. 0 of 8 products launched in the last 360 days are still selling. 90-day search growth is -46.9%. Flapen's verdict: Skip it (48/100).
How competitive is the 3d pen filament refills niche?
22 brands and 32 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 54% of demand.
What do buyers complain about in 3d pen filament refills?
Top complaints mined from reviews: Durability, 3D Effect, Color. The return rate is 1.5%.
When does demand for 3d pen filament refills peak?
Demand peaks in Jan–Nov–Dec; the busiest month runs 5.8× the quietest.
What does it cost to enter the 3d pen filament refills niche?
Listings span £5.18–£28.86; the average listing price is £10.37 (sweet spot $15–$100). The average incumbent carries 1,653 reviews — the moat a new listing must climb.