Brand comparison
GratKit vs SUNLU filament
A like-for-like price comparison of GratKit and SUNLU filament on Amazon UK and Eryone UK, from live prices.
- GratKit in stock
- 76
- SUNLU in stock
- 187
- materials in common
- 6
- cheaper on more materials
- GratKit
Compare different brands
GratKit
76 in stock · 9 materials
Typical price
£12.95/kg
From £8.54/kg
Cheaper overall
SUNLU
187 in stock · 15 materials
Typical price
£14.24/kg
From £7.43/kg
Cheaper per kg, material by material
GratKit 4–2 SUNLU
- PLA+
- PLA Silk Dual/Tri
- PETG
- PLA Matte
- PLA Matte Dual/Tri
- PLA Wood
- GratKit cheaper
- SUNLU cheaper
Head-to-head numbers
Live Amazon UK and Eryone UK listings in stock right now.
| GratKit | SUNLU |
|---|---|
| Typical price per kg | |
Better£12.95 | £14.24 |
| Cheapest per kg | |
£8.54 | £7.43Better |
| Listings in stock | |
76 | 187Better |
| Materials | |
9 | 15Better |
| Below usual price | |
25 | 30Better |
| At lowest tracked price | |
26 | 54Better |
Typical price per kg, by material
Median of each brand's listings for materials both stock. Lower is better.
- GratKit
- SUNLU
- PLA+GratKit 2% cheaperGratKit: £13.99SUNLU: £14.24
- PLA Silk Dual/TriGratKit 11% cheaperGratKit: £12.74SUNLU: £14.24
- PETGGratKit 2% cheaperGratKit: £10.00SUNLU: £10.25
- PLA MatteSUNLU 10% cheaperGratKit: £14.99SUNLU: £13.50
- PLA Matte Dual/TriGratKit 13% cheaperGratKit: £13.99SUNLU: £15.99
- PLA WoodSUNLU 33% cheaperGratKit: £21.99SUNLU: £14.64
Price spread per kg
Every listing in stock is a tick. The box covers the middle half of prices; the bar inside is the typical (median) price.
- GratKit
- SUNLU
GratKit
£8.54 – £35.10
SUNLU
£7.44 – £57.99
Range: listings in stock by material
What each brand actually sells right now, so you can see where one has more choice.
- GratKit
- SUNLU
- 3PLA+61
- 25PLA Silk Dual/Tri15
- 20PETG15
- 6PLA Matte26
- 0PLA Silk16
- 7PLA Matte Dual/Tri8
- 0PLA13
- 0TPU9
- 0PLA+ Silk8
- 6PETG Translucent1
Cheapest GratKit per kg
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.
Cheapest SUNLU per kg
Prices checked 6 Oct, 03:00–11:20 (UK time) and may change.We earn a small commission if you buy. Your price stays the same.
GratKit vs SUNLU: which is cheaper?
Both brands sell 6 materials on Amazon UK and Eryone UK that we can compare like for like. Comparing the typical (median) price per kilogram of each: GratKit is cheaper per kilogram for PLA+, PLA Silk Dual/Tri, PETG, PLA Matte Dual/Tri; SUNLU is cheaper per kilogram for PLA Matte, PLA Wood.
Across everything in stock, a typical GratKit listing costs £12.95 per kg against £14.24 for SUNLU. That mixes different materials, so the material-by-material prices are the fairer test.
GratKit has 76 listings in stock across 9 materials; SUNLU has 187 across 15 materials. Right now 25 GratKit and 30 SUNLU listings are below their usual 90-day price, and 80 are at their lowest tracked price.
Price is only part of it: diameter tolerance, spool type and how the reel is packed matter too, and they vary between product lines of the same brand. The reviews and price history on each product page help with those.
Common questions
Is GratKit or SUNLU filament cheaper?
On Amazon UK and Eryone UK right now, a typical GratKit listing costs £12.95 per kg and a typical SUNLU listing £14.24. Material by material, GratKit is cheaper for PLA+, PLA Silk Dual/Tri, PETG, PLA Matte Dual/Tri, and SUNLU for PLA Matte, PLA Wood.
Where can I see GratKit and SUNLU price history?
Every product page on SpoolDeal has the price history for that reel (free account) and a public "good time to buy?" verdict, so you can see whether today's price is low for it.
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.
Brand pages
Compare GratKit
Waiting for a better price?
Open any reel and set the price you want to pay. We check it through the day and email you when it gets there. Free, and you can switch it off any time.