UK filament price index
What a kilogram of 3D printer filament typically costs on Amazon UK, by material and by month. Every listing we track counts once, bundles at their full weight.
In November 2026 so far, PLA+ is the cheapest of the 6 materials tracked, at a median of £14.30 per kg across 1,067 Amazon UK listings. TPU is the dearest at £29.36 per kg. Prices have been steady: among listings priced in both October 2026 and November 2026, the typical listing moved by less than 1% in every material. November 2026 is not over, so its figures cover 9 days and will change.
Median price per kg, by month
| Month | PLA | PLA+ | PETG | ABS | ASA | TPU | Days tracked |
|---|---|---|---|---|---|---|---|
| September 2026 part month | £13.99 | £12.85 | £13.00 | £14.70 | £26.37 | £24.64 | 7 of 30 (10–16 Sep) |
| October 2026 part month | £20.59 +3.9% |
£14.10 +4.8% |
£14.79 +2.2% |
£23.71 +7.5% |
£28.27 +5.5% |
£28.98 +3.5% |
19 of 31 (13–31 Oct) |
| November 2026 so far | £20.59 0.0% |
£14.30 0.0% |
£14.47 0.0% |
£23.85 0.0% |
£26.75 0.0% |
£29.36 0.0% |
9 of 10 (1–9 Nov) |
The small figure is the price change from the month before among the same listings (see below for why that, and not the change in the median, is the one to quote). Download: the index as CSV · all open data files.
The same figures as a chart
Median £ per kg. Dashed lines join months that were only partly tracked, and the step up from September mostly reflects a wider catalogue, not dearer filament (see below). The vertical axis does not start at zero: read the scale.
Every figure, by material
| Material | Month | Median £/kg | Change in median | Same listings | Listings counted | Cheapest £/kg |
|---|---|---|---|---|---|---|
| PLA | September 2026 (part month) | £13.99 | — | — | 1,283 | £6.60 |
| PLA | October 2026 (part month) | £20.59 | +47.2% | +3.9% of 1,174 | 3,693 | £6.45 |
| PLA | November 2026 so far | £20.59 | 0.0% | 0.0% of 3,657 | 4,089 | £6.55 |
| PLA+ | September 2026 (part month) | £12.85 | — | — | 410 | £7.06 |
| PLA+ | October 2026 (part month) | £14.10 | +9.7% | +4.8% of 379 | 974 | £6.51 |
| PLA+ | November 2026 so far | £14.30 | +1.4% | 0.0% of 967 | 1,067 | £6.19 |
| PETG | September 2026 (part month) | £13.00 | — | — | 445 | £5.79 |
| PETG | October 2026 (part month) | £14.79 | +13.8% | +2.2% of 398 | 1,198 | £6.04 |
| PETG | November 2026 so far | £14.47 | -2.2% | 0.0% of 1,171 | 1,378 | £5.79 |
| ABS | September 2026 (part month) | £14.70 | — | — | 54 | £6.02 |
| ABS | October 2026 (part month) | £23.71 | +61.3% | +7.5% of 48 | 255 | £7.60 |
| ABS | November 2026 so far | £23.85 | +0.6% | 0.0% of 251 | 289 | £7.60 |
| ASA | September 2026 (part month) | £26.37 | — | — | 58 | £13.99 |
| ASA | October 2026 (part month) | £28.27 | +7.2% | +5.5% of 55 | 162 | £11.67 |
| ASA | November 2026 so far | £26.75 | -5.4% | 0.0% of 160 | 185 | £11.50 |
| TPU | September 2026 (part month) | £24.64 | — | — | 112 | £10.62 |
| TPU | October 2026 (part month) | £28.98 | +17.6% | +3.5% of 103 | 416 | £11.75 |
| TPU | November 2026 so far | £29.36 | +1.3% | 0.0% of 410 | 491 | £11.58 |
How the index is calculated
The index covers Amazon UK listings for new filament that this site tracks in six materials: PLA, PLA+, PETG, ABS, ASA, TPU. It is not a survey of every UK retailer, and it does not include Amazon Warehouse (used) prices.
- Price per kg. Each price reading is divided by the total filament weight in the listing, so a 4 × 1 kg bundle is priced as 4 kg. Listings with no usable weight are left out.
- One figure per listing per month. We record a price when it changes, and re-record an unchanged one about weekly. A reading stands until the next one, for at most 14 days; after that with no new reading the listing is treated as unavailable rather than assumed to cost the same. The listing’s figure for the month is its time-weighted average: a price held for three weeks counts three times as much as one held for a week.
- The same sanity limits as the rest of the site. A reading under £5.00 per kg is discarded, because in practice it is Amazon showing a single-roll price against a multi-pack title, and one over £500 per kg is a mis-read weight.
- The median, not the mean. The index is the middle listing: half cost more per kg, half cost less. A handful of speciality spools at £60 per kg would pull an average up; they do not move a median.
Cheapest £/kg is the lowest monthly figure of any single listing, so it is a price that was sustained, not a one-hour glitch. Same listings is the median price change among listings that had a figure in both that month and the one before; we publish it only from 20 listings or more.
What to keep in mind when quoting it
September 2026 is a part month. Tracking began on 10 September 2026, and was paused from 17 September to 12 October, so September rests on one week of readings and October on the 13th onwards. The “days tracked” column shows this for every month.
September and October are not like for like. In September the site was newly launched and tracked about 2,700 listings, mostly found through price drops and best-seller lists, so that month skews towards cheaper, popular filament. From mid-October it tracks the whole category, more than 8,000 listings. The rise in every median between the two months is therefore mostly a change in what was counted, not a rise in prices: do not quote it as one. The “same listings” column compares only listings priced in both months and is the better guide, though for September it too starts from discounted prices.
The current month is marked “so far” and changes until the month ends. Which listings count is decided by today’s catalogue: one we have since removed as mis-categorised is removed from earlier months too, so a past figure can shift by a few pence.
A listing is not a sale. Every listing counts equally, whether it sells a thousand spools a month or none. This is the typical asking price, not the average price paid.
Figures are recalculated every six hours; this version was generated on 10 November 2026 at 00:28 from 29,018 price readings between 10 September 2026 and 9 November 2026. How we rank live listings day to day is on how we rank.
Using these figures
The index and the current price of every listing are free to download from our open data page, and free to use with attribution and a link to 3dprinterdeals.co.uk. To see today’s cheapest spools rather than the monthly picture, start with PLA, PLA+, PETG, ABS, ASA or TPU.