Cheapest PLA Filament

The ranking rule, in one line

This list sorts by a single number: price per kg, lowest first. Nothing else moves a listing up or down. No brand pays for position, and there is no hidden score for color, finish or seller.

To be eligible, a listing has to pass four gates:

1. In stock on Amazon at the last check.
2. 1.75mm diameter. A cheap 2.85mm roll is useless to most current printers, so it never competes here.
3. Spools of 500g or more. Each spool in the listing must hold at least 500g, so half-kilogram rolls and up are included and packs of small spools are left out.
4. Not a sample. Spools of 250g or less are labelled samples everywhere on pla.deals and are never ranked in a cheapest list.

The per kg figure itself is the offer price divided by the total net filament weight in the listing, so a four-roll box is judged on all four rolls together. Each price shows when it was verified against Amazon; after 24 hours without a fresh check it changes to "Check price at Amazon" and drops out of the ranking. The full method lives on how we rank.

Why small spools and samples are excluded

A cheapest list exists to help you buy filament for real projects. Minis work against that in three ways.

First, they distort the ranking in both directions. A mini might be priced low as a trial offer or high to cover its packaging, and either way its per kg figure says little about what a full roll of the same filament costs.

Second, the packaging overhead is proportionally bigger. A small spool still needs a hub, a label, a bag and a box, so a larger share of what you pay goes to things that are not filament.

Third, a 250g spool runs out mid-print on a large part. If you are shopping for the lowest cost of printing, you want rolls big enough to finish a job. SUNLU, for instance, sells its PLA in weights from 250g up to 5kg according to its PLA product page (opens in a new tab). Only the 500g and larger sizes from that range could appear here.

The 500g floor is deliberately a little above the sample cutoff. It leaves out awkward in-between sizes that behave more like samples than working spools.

What you give up for the lowest price per kg

The listings at the top of this page are cheap for reasons. Some of those reasons will not matter to you, and some will.

Spool type. Low-cost rolls often ship on cardboard spools or as refills. That is fine on a simple spool holder, but multi-color feeders have opinions. Anycubic's ACE 2 Pro page (opens in a new tab) asks users to avoid cardboard spools, while Creality's CFS accepts them as long as they are not warped and their edges are treated, per its CFS manual (opens in a new tab).pdf).

Published tolerance. A tighter diameter tolerance means steadier extrusion. Many value brands publish one, and the numbers are not identical: Creality states ±0.03mm for Hyper PLA (opens in a new tab), while Overture states ±0.02mm for its standard PLA (opens in a new tab). A listing with no tolerance stated at all gives you nothing to hold the brand to.

Color range. Prices often differ by color within the same line, and a given brand may not make the shade you need. If a project calls for a specific color, the cheapest roll in that color may sit well down the list.

Consistency claims. Phrases like "no tangles", "bubble free" or "consistent color between batches" appear on almost every box. Neither pla.deals nor you can check them before buying, so they should not be the reason you choose one roll over another.

How to avoid a false bargain

A low number at the top of the list is a lead, not a verdict. Run through these checks before you buy:

1. Open the listing and confirm the weight. Make sure the title, the photos and the item details all agree on net filament weight and spool count.
2. Confirm the diameter on the label photo, not just the title.
3. Check the seller. A cheap offer from an unfamiliar third-party seller on a well-known brand's listing deserves a second look.
4. Compare against a multipack. If the top single roll is only slightly cheaper per kg than a multipack, the multipack may suit you better.
5. Think about storage. A 10kg bundle can top the list, but it only saves money if you can keep the spools sealed and dry until you use them.

If the cheapest options do not suit your printer, the best budget PLA page explains what separates a sensible low-cost spool from a merely cheap one.

Frequently asked questions

Why is a 250g spool with a tiny price not at the top?

Spools of 250g or less count as samples and never enter this ranking. Their low box price usually hides a high cost per kg, and they are too small for most projects.

Does a cheaper listing mean lower quality filament?

Not necessarily. Price per kg reflects pack size, spool type and seller as much as the filament itself. Check the published tolerance and temperature range on the brand's own page rather than assuming.

Why did a listing drop off the list?

It went out of stock, its price was not reconfirmed within 24 hours, or another listing undercut it. The ranking updates as prices are checked again.

Are multipacks ranked against single spools?

Yes. Every eligible listing is compared on price per kg, using the combined net weight of all spools in the box, so a single roll and a ten-pack compete on equal terms.