Filament deals
Cheapest refill filament in the UK
36 refill filaments (no spool) in stock on Amazon UK and Eryone UK, cheapest per kilogram first.
- filaments
- 36
- cheapest
- £7.43/kg
Live prices
Prices checked 5 Oct, 03:00 – 6 Oct, 11:20 (UK time) and may change.We earn a small commission if you buy. Your price stays the same.
About refill filament
Refill filament comes without a spool, to go onto a reusable spool you already have. It cuts plastic waste and is often a little cheaper than the same filament on a spool.
You'll need a reusable spool that fits the refill, so check its size against your spool before you buy. Each product page flags a refill in its "Before you buy" notes.
Common questions
What is the cheapest refill filament right now?
Right now it is SUNLU PLA Refill Filament 1.75mm, Refill PLA 3D Printer Filament Suitable for Bambu Lab Filament and SUNLU Reusable spools, 1kg per Spool, 4 Pcs, 4 Colors, Black+White+Red+Klein Blue at £29.74 (£7.43 per kg) on Amazon UK (as of 6 Oct 2026). This page lists the cheapest per kilogram first, and prices are re-checked through the day.
Which materials does refill filament come in?
In stock on Amazon UK and Eryone UK right now: PLA (17), PETG (9), PLA Matte (4), PLA Silk (2), PLA+ (2), Nylon (1) and PETG Translucent (1).
What is refill filament?
Filament wound without a spool, held together with clips or a band, to fit onto a reusable spool. It's the same filament as the spooled version; you supply the spool.
How SpoolDeal checks prices
The same rules on every page, so a deal badge means the same thing everywhere.
Re-checked through the day
Every tracked listing on Amazon UK and Eryone UK is re-checked through the day, and the most-watched ones every two hours.
Measured against our own history
A deal only counts when the price is below what that reel has actually sold for over the last 90 days, not a seller's “was” price.
An email when it drops
Set a target price on any reel with a free account and we email you when it gets there.
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