SUNLU 3D printer filament & dryers
A 3D printing filament and resin brand with its own store, regional warehouses and low per-kilo prices, but a return policy that accepts only unopened filament and puts return postage on the buyer.
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Cheap spools and plenty of regional stock, with return rules that suit unopened products only
SUNLU is a Hong Kong-registered 3D printing brand that sells filament, resin, filament dryers and accessories through its own store and through marketplaces and resellers. The store ships from regional warehouses and lists prices by destination.
Filament prices are low and the shipping policy promises free delivery with stated processing and transit times for the US, Canada, Europe, the UK and Australia. The return policy is narrower than the pricing suggests: filament and resin can only be returned unopened, buyers pay return shipping unless the product was damaged in transit or is faulty, and refunds follow inspection. We found no independent lab test of the filament, only retailer listings and reviews hosted on SUNLU's own site, and we have not printed with any of it.
Right for
- Hobbyists who want inexpensive PLA, PLA+ or PETG in many colors
- Buyers in the US, Canada, Europe, the UK or Australia who can ship from a local warehouse
- People who will test one spool before buying a bundle
Wrong for
- Anyone who wants to return an opened spool that did not print well
- Buyers who need verified mechanical data for functional parts
- Shoppers who want a free return label
+What it gets right
- Low prices per kilogram. PLA starts around $10 for 1 kg and PLA+ 2.0 around $11 on the sale prices we saw, with bundles and larger spools listed too.
- Regional warehouses. The shipping page lists warehouses in the US, Canada, Europe (Frankfurt), the UK and Australia, with processing and delivery times for each.
- Free shipping is stated. The policy lists shipping as free in the main zones, with extra fees for some European countries shown at checkout.
- Broad range in one store. PLA variants, PETG, silk, engineering filaments, resin and dryers are all listed.
- Cancel before dispatch. Orders can be cancelled before shipment or production for a full refund.
−Where it slips
- Opened filament cannot be returned. For FDM filament and LCD resin only unopened products are accepted.
- Return postage is on you. Buyers pay return shipping, except when a machine is damaged in transit or has a quality fault and support has been emailed first.
- Struck-out prices inflate the discount. Most listings show a higher crossed-out price, so judge the current price rather than the percentage off.
- Free-shipping wording varies. A banner mentions free shipping on orders over $40 while the policy page says free; check the cart.
- No independent testing found. The reviews we found were on retailer pages or SUNLU's own blog, and we saw no lab data.
- Duties are not covered. The policy says customs fees and import duties may apply and cannot be calculated at checkout.
Weighted for product range, returns, shipping, price and independent evidence
Policy clarity and independent evidence carry the most weight. This is a desk-research score: we have not printed with SUNLU filament.
The long version
What SUNLU sells, how shipping and returns work, what the prices mean and what we could and could not verify.
What SUNLU is
SUNLU sells 3D printing consumables and accessories: FDM filament in PLA, PLA+, PETG, silk, metallic and engineering types, LCD resin, filament dryers and dehumidifying cabinets, and accessories. The policy pages name SUNLU International (Hong Kong) Holdings Limited and give an email address, and the store states that its after-sales terms apply only to purchases from the official site, with eBay, Amazon, AliExpress and authorized resellers handling their own orders. The store also has a reseller and dropshipping page, a student discount and an affiliate program.
Products and prices
On 30 Oct 2026, with the store set to the United States, a 1 kg spool of SUNLU PLA started at $10.29, PLA+ 2.0 at $10.99 to $11.59 depending on color, PETG 2.0 at $12.99, Silk PLA+ 2.0 at $14.99 and PLA Galaxy at $19.99. The FilaDryer SP2 was $69.99, the FilaDryer S4 Pro $139.99 and the FilaDC i10 dehumidifying cabinet $199.99. Multi-spool bundles, 3 kg spools and an order protection add-on of $0.98 were also listed.
Nearly every listing shows a higher crossed-out price, for example $18.99 against $11.49 for PLA+ 2.0, so treat the discount percentage as marketing and compare the current price with other brands. The PLA+ 2.0 page showed a 5.0 rating from 50 reviews on SUNLU's own site, which we could not verify independently.
Shipping
The shipping policy lists warehouses and times by region. US orders ship from Kentucky, Los Angeles or New Jersey with 1 to 3 business days processing and 5 to 10 business days delivery, and Alaska, Hawaii, Puerto Rico and military addresses are excluded. Canada ships from Toronto in the same times. Europe ships from Frankfurt with 5 to 14 days delivery, and some countries, such as Denmark, Malta, Cyprus, Iceland, Norway and Switzerland, need extra fees. The UK ships from a UK warehouse in 3 to 7 business days and Australia from Sydney in 5 to 12. Transportation is listed as free, though a site banner mentions free shipping over $40, so check the cart.
The policy adds that packages may attract customs fees and import duties, which the store cannot calculate at checkout.
Returns, warranty and cancellations
Returns for a refund must be postmarked within 14 days of delivery, and items must be new and unused with all parts. For FDM filament and LCD resin only unopened products are accepted. You email support for the return address, ship by a trackable method and pay the return shipping, unless a machine arrived damaged or faulty, in which case SUNLU says it covers shipping for an exchange or refund after you email first. Refunds are issued after inspection, with at least 7 days to process and a refund to the original payment method within 10 business days. Orders shipped to the EU also get a 14-day cooling-off period. After the window, you rely on the warranty, which excludes lost products, misuse and purchases from unofficial sellers.
Orders can be cancelled before shipment or production for a full refund, but not after the parcel has shipped.
What we could and could not verify
We found no independent lab test of SUNLU filament and no Trustpilot data we could load. A web search returned mostly retailer listings, including a European retailer carrying SUNLU PLA+ 2.0, a blog post on a personal site whose method we could not check, and a review hosted on SUNLU's own store blog, which is not independent. Buyer comments on retailer sites were generally positive about color, winding and feeding, but those are unverified opinions rather than tests.
Because filament quality shows up in printing, the evidence that matters most, such as diameter consistency and tolerance, is something we could not check ourselves.
Buying advice
Match the material to the job before the brand: the Prusa Knowledge Base PLA page describes PLA as suited to concept models, prototypes and low-wear toys that soften above about 60 °C, which is a limit for parts left in a hot car. Buy a single spool first because opened filament cannot be returned, check your printer's temperature range against the listing, and confirm which warehouse your order ships from. For a checklist, see our guide on how to choose PLA or PETG filament.
Everything on paper
Figures from store.sunlu.com and its policy pages, checked 30 Oct 2026, plus the Prusa knowledge base.
Prices, offers and policies change often. Check the product page and the policies that apply when you buy.
Price points at a glance
Sale prices from the SUNLU store set to the US, checked 30 Oct 2026.
| Product | Price | Crossed-out price | What we know |
|---|---|---|---|
| PLA 1 kg | From $10.29 | $18.99 | Basic PLA; color affects price |
| PLA+ 2.0 1 kg | $10.99 to $11.59 | $18.99 | Our review sample page; 5.0 on 50 on-site reviews |
| PETG 2.0 1 kg | $12.99 | $18.99 | Described as lower moisture absorption by the brand |
| Silk PLA+ 2.0 1 kg | $14.99 | $29.99 | Glossy finish per the brand |
| FilaDryer SP2 | $69.99 | $109.99 | Dryer; ships with storage box variants |
If you are choosing a material, start with the job; our PLA or PETG guide explains how.
Questions people actually ask
Is SUNLU legit?
What does SUNLU sell?
How much does SUNLU filament cost?
What is the SUNLU return policy?
How long does SUNLU shipping take?
Does SUNLU ship worldwide?
Does SUNLU have a warranty?
Shop SUNLU
Buy one spool first, because opened filament cannot be returned, and check which warehouse serves your country.
SUNLU
3D printer filament, resin and dryers shipped from regional warehouses.
Shop SUNLUSUNLU PLA+ 2.0 1 kg
Listed from $10.99 on the page we saw; unopened spools can be returned within 14 days.
See PLA+ 2.0 at SUNLUPrices observed 30 Oct 2026 and subject to change. This is an affiliate link.
Low prices and regional stock for hobbyists who accept strict rules on opened spools
SUNLU lists clear shipping times by region and keeps per-kilogram prices low, which makes it easy to try a spool.
Weigh the unopened-only return rule, buyer-paid return postage, crossed-out list prices and the lack of independent testing, and start small.
Consider it if you
- You want inexpensive PLA or PETG
- You ship from a nearby warehouse
- You will test one spool first
Skip it if you
- You need to return opened spools
- You need lab-verified data
- You want free return shipping
How this review was put together
This is a desk-research review. We have not printed with SUNLU filament. Prices, policies and claims come from store.sunlu.com (checked 30 Oct 2026), a retailer listing and the Prusa knowledge base, and we looked for independent tests and report what we could not find. We wrote our own text. The images are our own screenshots of public SUNLU pages, taken on 30 Oct 2026 and shown for review and commentary; the content and branding belong to SUNLU, and we will remove them if asked. We did not download or reuse image files or logos, and we did not review the brand's affiliate programme terms.
Big Time Bikers is independent and is not affiliated with, sponsored or endorsed by SUNLU. The link to SUNLU is an affiliate link: if you buy through it we may earn a commission at no extra cost to you, and this never changes a score. We did not receive payment or a free product for this review.