Data

    UK filament price index: December 2025

    In December 2025 the median PLA spool cost £13.29/kg, up 4.3% on November, across 311 listings. Across all filament the median was £14.99/kg, up 3.8% on November.

    all filament, median
    £14.99/kg
    materials ranked
    24
    listings
    1,682
    figures as of
    6 Oct 2026
    Final figures

    This is the archived index for December 2025. See the latest month.

    From 1,682 filament listings on Amazon UK and Eryone UK, as of 6 Oct 2026. Updated every night.

    Key findings, December 2025

    • All filament: a median of £14.99/kg in December 2025, up 3.8% on November (up 2.2% like for like).
    • PETG was the cheapest material per kg (median £11.99); ASA the dearest (£20.34).
    • PLA Marble moved most: up 9.6% like for like on November.
    • The cheapest PLA brand per kg was LANDU, at a median of £10.71, 19% below the PLA median.
    • Black Friday 2025 (20 Nov 2025 to 1 Dec 2025) was the deepest sale: filament prices fell a median 5.3% below their usual price, and 57% of listings were at least 5% off.
    • Multi-packs of PLA cost a median £10.60/kg, 24% less than single spools.

    Filament price leaderboard, December 2025

    Every material with enough listings, cheapest median per kg first, against the all-filament benchmark. Switch tabs for buying and bulk figures.

    What a kilogram of each material typically costs, and which way it's moving.

    Prices: filament materials ranked by median price per kilogram, December 2025, cheapest first
    12-month trend
    Benchmark, not rankedAll filament
    £14.99
    up3.8%up2.2%—1,682
    Rank 1PETG
    £11.99
    unchanged0.0%down2.4%—101
    Rank 2PETG Dual/Tri
    £11.99
    up9.1%up4.9%—11
    Rank 3PLA
    £13.29
    up4.3%up3.7%—311
    Rank 4PLA Rainbow
    £13.36
    unchanged0.0%up3.1%—12
    Rank 5PLA Matte Twist
    £13.71
    down9.8%down8.3%—8
    Rank 6PLA Matte
    £13.99
    up5.3%up4.3%—203
    Rank 7PLA+
    £14.24
    up4.8%up1.7%—228
    Rank 8PLA Silk
    £15.19
    up1.3%up1.8%—103
    Rank 9PLA Matte Dual/Tri
    £15.99
    unchanged0.0%up1.6%—58
    Rank 10PLA Translucent
    £15.99
    up14.3%up5.9%—29
    Rank 11PETG Translucent
    £15.99
    down5.9%down7.2%—7
    Rank 12PLA Silk Dual/Tri
    £16.14
    up0.9%up2.5%—218
    Rank 13PETG-CF
    £16.79
    down10.2%down7.4%—7
    Rank 14PLA Glitter
    £16.99
    up6.3%unchanged0.0%—109
    Rank 15PLA Glow
    £16.99
    up6.3%up1.3%—47
    Rank 16PLA Marble
    £16.99
    up11.9%up9.6%—30
    Rank 17PLA Matte Rainbow
    £17.29
    up11.1%up7.4%—34
    Rank 18PLA Silk Rainbow
    £17.59
    down2.2%down0.7%—59
    Rank 19PLA Silk Twist
    £17.59
    down20.0%down1.9%—9
    Rank 20PLA Matte Gradient
    £17.99
    up2.3%up3.5%—41
    Rank 21PLA Silk Gradient
    £17.99
    unchanged0.0%up2.2%—20
    Rank 22PLA Wood
    £18.49
    up6.6%up0.2%—12
    Rank 23ABS
    £19.99
    unchanged0.0%down7.0%—9
    Rank 24ASA
    £20.34
    unchanged0.0%up0.5%—12

    Ranked by median price per kg, cheapest first; "All filament" is every material together. The bar marks the median within the middle half of listings. "vs last month" compares medians; "like for like" follows the same listings in both months; "vs a year ago" compares the median with the same month last year. Highlighted cells are the best in each column. Materials need 5 listings to be ranked; tap a heading to sort.

    How prices moved

    The four materials with the most listings and the all-filament benchmark, month by month.

    Median price per kg by monthPLAPLA+PLA Silk Dual/TriPLA MatteAll filament
    £11£13£15£16£18OctNovDecPLA Silk Dual/TriAll filamentPLA+PLA MattePLA

    Cheapest brands per kg

    The brands with the lowest median price per kg in December 2025, by material.

    Cheapest PLA brands per kg, December 2025: the median of each brand's listings (brands with two or more), top 10 of 12.
    Rank 1LANDU£10.71/kgdown19.4%12
    Rank 2eSUN£10.99/kgdown17.3%39
    Rank 3Kingroon£11.50/kgdown13.5%21
    Rank 4ERYONE£12.59/kgdown5.3%26
    Rank 5JAYO£12.99/kgdown2.3%12
    Rank 6ANYCUBIC£13.29/kgunchanged0.0%73
    Rank 7OVERTURE£13.29/kgunchanged0.0%23
    Rank 83DHoJor£13.59/kgup2.3%2
    Rank 9ELEGOO£14.39/kgup8.3%42
    Rank 10iSANMATE£15.99/kgup20.3%8

    Every month's brand ranking is in the brands CSV.

    How deep were the sales?

    Prime Day, Black Friday and other events in the last year, ranked by how far prices really fell.

    Sales events ranked by the median discount against each listing's usual price
    By material
    Rank 1Black Friday 202520 Nov 2025 to 1 Dec 2025 · 1628 listings5.3%all filament
    57%
    • PETG Translucent −15.0%
    • PLA Silk Dual/Tri −15.0%
    • PETG −12.9%
    • ASA −12.2%
    • PLA Marble −10.7%
    • PLA Matte Twist −10.3%
    • PLA Matte Dual/Tri −10.0%
    • PLA Matte −8.2%
    • ABS −6.7%
    • PLA Rainbow −6.3%
    • PLA Silk Gradient −5.6%
    • PLA Wood −5.6%
    • PETG-CF −5.3%
    • PLA+ −5.1%
    • PLA −5.0%
    • PLA Translucent −5.0%
    • PLA Glitter −3.9%
    • PLA Matte Rainbow −2.6%
    • PETG Dual/Tri −0.0%
    • PLA Glow −0.0%
    • PLA Matte Gradient −0.0%
    • PLA Silk −0.0%
    • PLA Silk Rainbow −0.0%
    • PLA Silk Twist −0.0%
    Rank 2Prime Big Deal Days 20257 Oct 2025 to 8 Oct 2025 · 1283 listings0.0%all filament
    45%
    • PLA Marble −15.7%
    • PETG Translucent −10.5%
    • PLA Matte Twist −9.6%
    • PLA Silk Dual/Tri −9.1%
    • ASA −8.8%
    • PLA Matte Dual/Tri −6.7%
    • PETG-CF −6.3%
    • PLA Matte −5.9%
    • PLA Silk Rainbow −5.0%
    • PLA Wood −5.0%
    • PLA Rainbow −3.1%
    • PLA+ −0.4%
    • ABS −0.0%
    • PETG −0.0%
    • PETG Dual/Tri −0.0%
    • PLA −0.0%
    • PLA Glitter −0.0%
    • PLA Glow −0.0%
    • PLA Matte Gradient −0.0%
    • PLA Matte Rainbow −0.0%
    • PLA Silk −0.0%
    • PLA Silk Twist −0.0%
    • PLA Translucent −0.0%
    • PLA Silk Gradient −21.1%

    The discount is each listing's lowest price during the event against its own median over the 30 days before, from our price history, not the retailer's "was" price.

    Filament prices: common questions

    Answers from the December 2025 figures.

    How much does PLA filament cost in the UK?

    In December 2025 the median PLA listing on Amazon UK and Eryone UK cost £13.29/kg, and the middle half of listings cost between £11.29 and £15.09 per kg. That's from 311 listings in SpoolDeal's price index, as of 31 Dec 2025.

    What is a good price for PLA filament per kg?

    Under £11.29/kg is cheaper than three in four PLA listings we track (December 2025). The cheapest brand per kg was LANDU, at a median of £10.71/kg. Compare by price per kg, not per spool: spool sizes and multi-packs vary.

    Is 3D printer filament getting cheaper?

    Across all filament the median was £14.99/kg in December 2025, up 3.8% on the month before. Like for like, following the same listings, prices were up 2.2%.

    Are filament multi-packs cheaper than single spools?

    PLA multi-packs cost £10.60/kg, 24% less than single spools (£13.99/kg); PLA+ multi-packs cost £10.99/kg, 27% less than single spools (£14.99/kg); PLA Silk Dual/Tri multi-packs cost about the same per kg as single spools (£20.99/kg), in December 2025.

    How much do filament prices really drop on Prime Day and Black Friday?

    Black Friday 2025: prices fell a median 5.3% below their usual price, with 57% of listings at least 5% off. Prime Big Deal Days 2025: prices barely moved from their usual price, with 45% of listings at least 5% off. The usual price is each listing's own median over the 30 days before the event, from our price history, not the retailer's "was" price.

    Can I use these figures?

    Yes. The index and its CSV are free to reuse under CC BY 4.0: credit "SpoolDeal UK filament price index" and link to the month's page. Press and data questions: james@trinkify.co.uk.

    Methodology

    What's covered. The filament listings SpoolDeal tracks on Amazon UK and Eryone UK, not every UK shop. We check prices through the day and keep every change, so each listing has a price for every day: the one in effect at noon (UTC). It's the lowest price on offer, including Prime members' prices where those are lower, with VAT. Dividing by the filament weight on the listing (a multi-pack counts every spool) gives a price per kilogram.

    How a month is worked out. A listing's price for a month is the median of its days; it needs at least seven days of prices. A material's figure is the median across its listings, and "All filament" is the median across every listing. Listings under £4/kg or over £250/kg are left out as mispriced. Materials are grouped as the listings name them (PLA, PLA+, PLA Silk and so on).

    Change. "vs last month" and "vs a year ago" compare medians, so they move when listings come and go. "Like for like" follows only the listings priced in both months: the geometric mean of each listing's own change, the method the ONS uses for the Consumer Prices Index. "Now vs usual" compares a month's median with the median of the months before it, up to a year.

    Brands, multi-packs and sales. A brand is ranked on the median of its listings of that material (at least two). Multi-packs include single spools of 2 kg or more; the single-spool and multi-pack figures each need three listings. A sales event's discount compares each listing's lowest price during the event with its own median over the 30 days before (at least 14 days of prices); it never uses the retailer's "was" price. Event dates are the retailer's announced dates.

    Revisions. The last 13 months are recomputed every night from the full history, so the running month is provisional and a recent month can shift slightly as late price changes arrive. Older months are frozen, and every month keeps its own page.

    Reuse. Free under CC BY 4.0: credit "SpoolDeal UK filament price index" with a link to the month's page. Data: materials CSV and brands CSV. Questions: james@trinkify.co.uk.

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