---
title: "Filament Spool — $154K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/industrial-scientific/filament-spool"
last_updated: "2026-08-08T08:47:11.121Z"
locale: en
meta:
description: "Niche score 50/100 · $154K/yr market. Brand-locked demand (top 5 brands take 92% of clicks) keeps it on the watch list. Data updated Aug 2026."
"og:description": "Niche score 50/100 · $154K/yr market. Brand-locked demand (top 5 brands take 92% of clicks) keeps it on the watch list. Data updated Aug 2026."
"og:title": "Filament Spool — $154K/yr Amazon US Niche (2026) - Flapen"
---
# **filament spool**
**Worth a look**
Shows low returns (0.9%), but brand-locked demand (top 5 brands take 92% of clicks) keeps it on the watch list.
Market size 33Growth 20Conversion 63Competition 63Returns 95Price range 81Avg price 83Brand share 19Review moat 88Quality gap 28
**Returns**
**Incredible****0.9%**
return rate — above 5% kills the launch gate
**Review moat**
**Great****232.86**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$18.01**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.30–$40.85**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****5.5%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Good****47%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****$154K**
$154K/yr · 155K searches
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-9.3%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****92%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, filament spool is a $154K/yr Amazon United States market (155K searches/yr). The top 5 brands hold 92% of demand. Verdict: Worth a look — 50/100.
Data updated Aug 6, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **filament spool market data**
- **Units sold / yr**
- **8K–10K**
- avg 100–250/product
- **Revenue / yr**
- **$144K–$180K**
- units × avg price
- **Conversion rate**
- **5.5%**
- **Avg BSR**
- **#337**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **97%**
- **Out of stock**
- **5.5%**
- **Avg brand age**
- **24 months**
- **Avg seller age**
- **117 days**
## **Competition & brand share**
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**10 **▼falling
**Sellers**
**16**
**Top-5 brand share**
**92%**
Top 20: 100%
**Top-5 click share**
**47%**
Top 20: 89%
**Open market**
**6%**
- MarsWork73% - Biaysan7% - UniTak3D6% - ANYCUBIC4% - Howarx3% - Asbrot2% - Open — no brand owns it (4 brands, 6%)
## **Demand**
Weekly Amazon search volume, last 8 weeks — -9.3% search growth over the last 90 days.
5K4KSpike '26Jun '26Jun '26Jun '26Jul '26Jul '26Jul '26Jul '26Aug '26
[**Open Trend **](https://flapen.com/research/us/industrial-scientific/filament-spool/trend)
## **Top filament spool search terms**
- **filament spool**38K/yr-14.1%5.8% conv. - **marswork pla**13K/yr+16.7%1.3% conv. - **marswork filament**10K/yr+61.2%0.8% conv. - **reusable filament spool**24K/yr-34.4%4.3% conv. - **marswork**8K/yr+77.8%1.6% conv. - **3d printer spool**9K/yr-15.3%4.3% conv. - **reusable spool**8K/yr-26.1%3.9% conv. - **3d printer filament spool**5K/yr+1.0%3.5% conv. - **filament spool adapter**7K/yr-31.4%1.6% conv. - **filament spools**5K/yr-9.8%4.2% conv. [**All search terms **](https://flapen.com/research/us/industrial-scientific/filament-spool/search-terms)
## **Top filament spool 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%5%$8K10%$15K15%$23K20%$31K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**MarsWork Quick-Swap Reusable Spool for Refill Filament Two-Finger Press Design Compatible with Bambu Lab 3D Printers**MarsWork**$15.37**4.8★363 rev](https://www.amazon.com/dp/B0FRS2L5LP) [2**MarsWork Quick-Swap Reusable Spool for Refill Filament Two-Finger Press Design Compatible with Bambu Lab 3D Printers 4 pcs**MarsWork**$32.90**4.8★363 rev](https://www.amazon.com/dp/B0GT46RBSR) [3**Original AMS Detachable Filament Spool Compatible with Bambu Lab 3D Printer Reusable Filament Reel Holder Fits PLA PETG ABS Filament Spool for Bambulab A1/A1 Mini Support Low-Temp Environment 70C**UniTak3D**$16.98**4.8★359 rev](https://www.amazon.com/dp/B0DG2VBC1R) [4**Original Reusable Split Spool for Bambu Lab AMS Gray-White or Transparent Compatible with X1/P1/A1 Series Tool-Free Modular Design**Biaysan**$17.92**4.8★41 rev](https://www.amazon.com/dp/B0FH6TCF54) [5**MarsWork PLA Filament 1.75mm PLA 3D Printer Filament(Refill) 1kg Refill for Reusable Spools(2.2lbs) Premium Quality 3D Printing Filament for Bambu lab 3D Printers Black**MarsWork**$14.62**4.4★181 rev](https://www.amazon.com/dp/B0DK7MVPCP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**MarsWork Quick-Swap Reusable Spool for Refill Filament Two-Finger Press Design Compatible with Bambu Lab 3D Printers Empty Filament Spool 2 pcs**MarsWork**$18.87**379 rev3mo ago](https://www.amazon.com/dp/B0GZQ346JJ) [**Buhobha Quick Change Reusable Spool with a Rotating Latch Design Compatible with the Bambulab A1/A1 Mini Suitable for PLA PETG and ABS filaments Temperature Resistance: 70**Buhobha**$9.30**9 rev3mo ago](https://www.amazon.com/dp/B0GXVJ6PSY) [**Asbrot Quick Detachable Reusable 3D Printer Spool for Filament Refill(1Kg)**Asbrot**$9.35**10 rev4mo ago](https://www.amazon.com/dp/B0GWHRDYZZ) [**MarsWork Quick-Swap Reusable Spool for Refill Filament Two-Finger Press Design Compatible with Bambu Lab 3D Printers 4 pcs**MarsWork**$32.90**363 rev4mo ago](https://www.amazon.com/dp/B0GT46RBSR) [**MarsWork Matte Burgundy PLA Filament with Quick-Swap Reusable Spool 1kg (2.2lbs) 1.75mm 3D Printing Filament Compatible with Bambu Lab 3D Printers**MarsWork**$21.37**379 rev5mo ago](https://www.amazon.com/dp/B0GQR3CRHF)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**MarsWork Quick-Swap Reusable Spool for Refill Filament Two-Finger Press Design Compatible with Bambu Lab 3D Printers 4 pcs**MarsWork**$32.90**4.8★**▲ 185%**](https://www.amazon.com/dp/B0GT46RBSR) [**MarsWork Quick-Swap Reusable Spool for Refill Filament Two-Finger Press Design Compatible with Bambu Lab 3D Printers Empty Filament Spool 2 pcs**MarsWork**$18.87**4.4★**▲ 184%**](https://www.amazon.com/dp/B0GZQ346JJ) [**Asbrot Quick Detachable Reusable 3D Printer Spool for Filament Refill(1Kg)**Asbrot**$9.35**5.0★**▲ 184%**](https://www.amazon.com/dp/B0GWHRDYZZ) [**MarsWork Matte Burgundy PLA Refill Filament 1kg (2.2lbs) for Reusable Spools 1.75mm Spool-Less 3D Printing Filament Compatible with Bambu Lab 3D Printers**MarsWork**$15.61**4.4★**▲ 183%**](https://www.amazon.com/dp/B0GQQSFZCQ) [**Buhobha Quick Change Reusable Spool with a Rotating Latch Design Compatible with the Bambulab A1/A1 Mini Suitable for PLA PETG and ABS filaments Temperature Resistance: 70**Buhobha**$9.30**4.6★**▲ 183%**](https://www.amazon.com/dp/B0GXVJ6PSY)
**~~View all trending →~~**
## **What buyers say about filament spool**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“Good quality”*
**Value For Money**10%
*“Cheaper”*
**Ease Of Use**10%
*“Easy to use”*
**Size-Overall**8%
*“the fit is solid”*
**Advertised Vs Actual Product**8%
*“Work as advertised”*
**Color**7%
*“Really nice color”*
**Strength**6%
*“the spool feels sturdy”*
**Compatibility-Overall**6%
*“Compatable”*
**Design-Overall**3%
*“The construction quality also feels genuinely good in hand”*
**Durability**3%
*“durable in hand”*
### **What buyers complain about **
**Value For Money**13%
*“if a little overpriced”*
**Size-Overall**10%
*“the fit can sometimes be too tight or a little loose”*
**Color**8%
*“The color isn't bright”*
**Quality-Overall**6%
*“lacks some finesse of the higher end versions out there”*
**Durability**6%
*“does not hold for long”*
**Strength**6%
*“Very brittle”*
**Advertised Vs Actual Product**3%
*“lists a bunch off”*
**Flexibility**3%
*“the sides bend a lot”*
**Print Quality**3%
*“The only minor issue I had was getting some of this flaky shard looking dust coming off the prints”*
**Adhesion/Stickiness**1%
*“The adhesion is terrible”*
### **Top return reasons **
**Size-Overall**42%
**Value For Money**18%
**Compatibility-Overall**13%
**Advertised Vs Actual Product**8%
**Color**7%
**Functionality-Overall**6%
**Print Quality**1%
**Strength**1%
**Defective Material/Parts**1%
**Quality-Overall**1%
## **Common questions**
- **Is filament spool profitable to sell on Amazon United States?**
- The niche generates $154K/yr across 29 tracked products. 16 of 22 products launched in the last 360 days are still selling. 90-day search growth is -9.3%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the filament spool niche?**
- 10 brands and 16 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 92% of demand.
- **What do buyers complain about in filament spool?**
- Top complaints mined from reviews: Value For Money, Size-Overall, Color. The return rate is 0.9%.
- **What does it cost to enter the filament spool niche?**
- Listings span $9.30–$40.85; the average listing price is $18.01 (sweet spot $15–$100). The average incumbent carries 233 reviews — the moat a new listing must climb.
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