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Single-spool filament, ranked by £/kg — on offer now, page 6

One spool per listing, with bundles and multipacks left out. Bundles take the top of any ranking by cost per kilogram, so this is the list to use when you want the cheapest single spool: to try a brand, to match a colour, or for a first order. Pick a weight below to compare like with like.

670 currently discounted.

Product	Material	Weight	Rating	Price	Per kg	Deal
Polymaker Panchroma Matte PLA Filament, Matte Sunrise Orange 1.75mm 1kg 3D Pri	PLA	1 kg	★★★★½ 4.7 out of 5 (142 Amazon ratings)	£18.00	£18.00	12% below
Polymaker Panchroma Matte PLA Filament, Matte Muted White 1.75mm 1kg 3D Printi	PLA	1 kg	★★★★½ 4.6 out of 5 (783 Amazon ratings)	£18.00	£18.00	53% below
Garosa High Speed PETG 3D Printer Filament, Durable Material, Flexible Thermop	PETG	1 kg	—	£18.19	£18.19	8% below
iBOSS PLA Plus (PLA+) 3D Printer Filament 1.75mm, 1kg (2.2lbs) Yellow, Toughne	PLA+	1 kg	★★★★½ 4.4 out of 5 (651 Amazon ratings)	£18.54	£18.54	51% below
eSUN PETG Filament, Solid Black, 1.55 kg	PETG	1.55 kg	★★★★½ 4.5 out of 5 (755 Amazon ratings)	£28.82	£18.59	—
1.75mm PLA Filament with High Toughness, Glossy Finish, Silk Like Texture for	PLA	1 kg	—	£18.78	£18.78	—
IEMAI 3D Printer Filament Carbon Fiber PETG Filament, 1.75mm, 1kg Spool, Matte	PETG	1 kg	★★★★½ 4.5 out of 5 (382 Amazon ratings)	£18.98	£18.98	—
BASICFIL PLA SILK 2.85mm, 1 kg, 3D printing filament, White	PLA	1 kg	—	£19.01	£19.01	—
Polymaker PETG Black 3D Printer Filament 1.75mm 1KG, High Flow & High Strength	PETG	1 kg	★★★★½ 4.5 out of 5 (107 Amazon ratings)	£19.03	£19.03	45% below
Flashforge ASA CF/Carbon Fiber Tough 3D Printing Filament 1.75mm 1KG, UV & Wea	ASA	1 kg	★★★★☆ 3.8 out of 5 (5 Amazon ratings)	£19.20	£19.20	Warehouse · 16% under new
Polymaker PolySonic High Speed PLA PRO - 1 kg - White	PLA	1 kg	★★★★½ 4.7 out of 5 (98 Amazon ratings)	£19.30	£19.30	52% below
PolyMaker PRO PLA 1.75mm Green - Tough & High Rigidity 3D Printing Filament, 1	PLA	1 kg	★★★★½ 4.6 out of 5 (1,625 Amazon ratings)	£19.36	£19.36	55% below
RAMBERY Matte Rainbow 3D Printer Filament 1.75mm Matte PLA Filament for 3D Pri	PLA	1 kg	★★★★★ 4.9 out of 5 (11 Amazon ratings)	£19.46	£19.46	54% below
Silk Yellow Shiny PLA 3D Printing Filament, 1KG 2.2Lbs 1.75mm 3D Print Materia	PLA	1 kg	★★★★½ 4.6 out of 5 (25 Amazon ratings)	£19.63	£19.63	50% below
Kingroon PLA 3D Printer Filament, Triple Color Silk PLA Filament, Dimensional	PLA	1 kg	★★★★★ 5.0 out of 5 (5 Amazon ratings)	£19.65	£19.65	52% below
iBOSS Cosmic Rainbow 3D PLA Filament 1.75 mm +/- 0.02 mm, 1 kg Silk Cosmic Rai	PLA+	1 kg	★★★½☆ 3.7 out of 5 (7 Amazon ratings)	£19.65	£19.65	29% below
JUSTMAKER TPU 95A 3D Printer Filament, Suitable Resilience, Upgrade Cardboard	TPU	1 kg	★★★★½ 4.4 out of 5 (113 Amazon ratings)	£19.66	£19.66	50% below
PolyLite ABS 3D Filament 1.75mm Pink - 1kg Heat Resistant ABS Cardboard Spool	ABS	1 kg	★★★★½ 4.5 out of 5 (427 Amazon ratings)	£19.68	£19.68	51% below
Polymaker Panchroma Matte PLA Filament, Sunshine Yellow 1.75mm 1kg 3D Printing	PLA	1 kg	★★★★★ 5.0 out of 5 (6 Amazon ratings)	£19.68	£19.68	48% below
Flashforge PLA Flexible 3D Printer Filament, 3D Printing Filaments 1kg Spool-D	TPU	1 kg	★★★★☆ 4.2 out of 5 (754 Amazon ratings)	£19.79	£19.79	Warehouse · 1% under new
Creality PLA Filament,Hyper PLA RFID 3D Printer Filament High Speed 30-600mm/s	PLA	1 kg	★★★★½ 4.5 out of 5 (95 Amazon ratings)	£20.01	£20.01	Warehouse · 4% under new
Prusament 3D Printer Premium Filament PLA Opal Green 1.75mm - 1kg Spool	PLA	1 kg	★★★★½ 4.6 out of 5 (286 Amazon ratings)	£20.13	£20.13	Warehouse
Winkle Tricolour Silk PLA Filament 1.75 mm Metamorphosis 1 kg, 3D Printer	PLA	1 kg	★★★★½ 4.6 out of 5 (12 Amazon ratings)	£20.15	£20.15	37% below
Polymaker HT-PLA-GF Filament 1.75mm Power Tool Yellow, High Temp PLA for 3D Pr	PLA-CF	1 kg	★★★☆☆ 3.1 out of 5 (29 Amazon ratings)	£20.30	£20.30	37% below
JUSTMAKER PETG Pro (PETG+) 3D Printer Filament, Updated Stronger Impact Resist	PETG	1 kg	★★★★☆ 3.8 out of 5 (36 Amazon ratings)	£20.36	£20.36	49% below
Creality Hyper PLA 3D Printer Filament 1.75mm, 1kg Spool (2.2lbs),High Speed P	PLA	1 kg	★★★★½ 4.5 out of 5 (159 Amazon ratings)	£20.39	£20.39	15% below
RAMBERY 3D Printer Filament 1.75mm Silk Rainbow PLA Filament Fast Color Change	PLA	1 kg	—	£20.52	£20.52	52% below
Polymaker Panchroma Gradient Matte PLA Filament, Multicolor Gradient Matte Pas	PLA	1 kg	★★★★★ 5.0 out of 5 (2 Amazon ratings)	£20.78	£20.78	48% below
Polymaker HT-PLA Filament 1.75mm Yellow, High Temp PLA for 3D Printing, Heat S	PLA	1 kg	★★★★½ 4.4 out of 5 (19 Amazon ratings)	£20.80	£20.80	52% below
Bambu Lab PETG Translucent Filament 1.75mm 1kg Spool - Strong Durable 3D Print	PETG	1 kg	★★★★½ 4.3 out of 5 (39 Amazon ratings)	£20.86	£20.86	52% below
Polymaker Panchroma Gradient Silk Rainbow PLA 3D Printing Filament 1.75mm 1kg,	PLA	1 kg	★★★★½ 4.4 out of 5 (40 Amazon ratings)	£20.96	£20.96	50% below
Creality PLA Filament,Hyper PLA RFID 3D Printer Filament High Speed 30-600mm/s	PLA	1 kg	★★★★½ 4.5 out of 5 (95 Amazon ratings)	£20.99	£20.99	—
Hamwesh PLA Filament 1.75mm, 1KG Black PLA 3D Printer Filament 600mm/s High Sp	PLA	1 kg	—	£21.31	£21.31	10% below
Creality PLA Filament,Hyper PLA RFID 3D Printer Filament High Speed 30-600mm/s	PLA	1 kg	★★★★½ 4.5 out of 5 (94 Amazon ratings)	£21.50	£21.50	Warehouse · 2% under new
Creality PLA Filament,Hyper PLA RFID 3D Printer Filament High Speed 30-600mm/s	PLA	1 kg	★★★★½ 4.5 out of 5 (95 Amazon ratings)	£21.50	£21.50	Warehouse
Polymaker Panchroma Marble PLA Filament, Marble White, 1.75mm, 1kg (2.2lbs), F	PLA	1 kg	★★★★½ 4.6 out of 5 (809 Amazon ratings)	£21.52	£21.52	40% below
AMOLEN Silk PLA 3D Printer Filament, Shiny Silk Purple PLA Filament 1.75mm, 3D	PLA	1 kg	★★★★☆ 4.2 out of 5 (207 Amazon ratings)	£21.58	£21.58	50% below
kexcelled Matte PETG Filament, 1.75mm +/- 0.03mm, 1kg, Black	PETG	1 kg	★★★★☆ 4.1 out of 5 (126 Amazon ratings)	£21.58	£21.58	—
Creality Hyper PLA RFID Filament Black 1KG	PLA	1 kg	★★★★★ 5.0 out of 5 (55 Amazon ratings)	£21.60	£21.60	51% below
Official Creality PLA Filament 1.75mm, Hyper PLA High Speed 30-600mm/s 3D Prin	PLA	1 kg	★★★★½ 4.7 out of 5 (889 Amazon ratings)	£21.61	£21.61	—
extrudr® PLA NX2 Matte ø1.75mm (1.1kg) Violet Matte - 3D Printer Filament - Ma	PLA	1.1 kg	★★★★½ 4.4 out of 5 (100 Amazon ratings)	£23.91	£21.74	6% below
AMOLEN PLA 3D Printing Filament, Silk PLA Filament 1.75mm Silk Shiny Filament	PLA	1 kg	★★★★☆ 4.2 out of 5 (255 Amazon ratings)	£22.00	£22.00	53% below
AMOLEN Silk PLA 3D Printer Filament, Shiny Silk Black PLA Filament 1.75mm, 3D	PLA	1 kg	★★★★☆ 3.8 out of 5 (22 Amazon ratings)	£22.00	£22.00	48% below
AMOLEN Rock PLA Filament 1.75mm, Dual Color Marble PLA 3D Printer Filament 1kg	PLA	1 kg	★★★★½ 4.7 out of 5 (15 Amazon ratings)	£22.00	£22.00	54% below
AMOLEN PLA Filament, Silk Shiny Black Purple, 1.75mm, 1kg (2.2lbs), Color Chan	PLA	1 kg	★★★½☆ 3.7 out of 5 (5 Amazon ratings)	£22.00	£22.00	53% below
AMOLEN 3D Printer Filament, Galaxy Gradient Color Changing with Light, 1.75mm,	PLA	1 kg	★★½☆☆ 2.3 out of 5 (6 Amazon ratings)	£22.00	£22.00	52% below
AMOLEN Silk PLA Filament Neon Green, 3D Printer Filament 1.75mm for 3D Printin	PLA	1 kg	★★★★½ 4.7 out of 5 (16 Amazon ratings)	£22.00	£22.00	48% below
AMOLEN Silk Bronze PLA Filament, 1.75mm, 2.2lbs, Silk PLA for Most FDM 3D Prin	PLA	1 kg	★★★★☆ 4.1 out of 5 (11 Amazon ratings)	£22.00	£22.04	46% below
AMOLEN Silk PLA 3D Printer Filament, Multicolor Rainbow, 1.75mm, 2.2lbs, Polyl	PLA	1 kg	★★★★☆ 4.0 out of 5 (16 Amazon ratings)	£22.00	£22.04	52% below
iBOSS PLA Pro (PLA+) 3D Printer Filament 1.75mm,Silk Shiny Filament 3D Printin	PLA+	1 kg	★★★★½ 4.7 out of 5 (31 Amazon ratings)	£22.06	£22.06	52% below
ERYONE ASA Filament, 3D Printer Filament 1.75mm +/- 0.03mm, Heat Resistant, Hi	ASA	1 kg	★★★★☆ 4.1 out of 5 (171 Amazon ratings)	£22.09	£22.09	—
ERYONE Nylon 3D Printer Filament, Polyamide PA6 Glass Fiber 20 Filament 1.75mm	Nylon	1 kg	★★★★☆ 3.8 out of 5 (90 Amazon ratings)	£22.09	£22.09	21% below
PLA Filament 1.75mm, GIANTARM New PLA 3D Printer Filament 1kg Spool (Black)…	PLA	1 kg	★★★★½ 4.6 out of 5 (553 Amazon ratings)	£22.23	£22.23	6% below
Polymaker PLA Pro 3D Printing Filament Cold White 1.75mm 1KG, High-Impact Toug	PLA	1 kg	★★★★½ 4.3 out of 5 (88 Amazon ratings)	£22.45	£22.45	50% below
2025 Official RFID Creality Hyper PLA RFID Filament 1.75mm for K2 Plus Combo,	PLA	1 kg	★★★★½ 4.7 out of 5 (21 Amazon ratings)	£22.74	£22.74	48% below
Polymaker PETG Lime 3D Printer Filament 1.75mm 1KG, High Flow & High Strength,	PETG	1 kg	★★★★½ 4.6 out of 5 (21 Amazon ratings)	£22.78	£22.78	42% below
Ataraxia Art Rainbow 3D Printer Filament, PLA, 1.75mm, 1kg (2.2lb), Multicolor	PLA+	1 kg	★★★★☆ 4.2 out of 5 (47 Amazon ratings)	£22.79	£22.79	49% below
Creality Ender PLA+ Filament for 3D Printers, 1.75 mm 3D Printing Filament, 1	PLA+	1 kg	★★★★½ 4.5 out of 5 (76 Amazon ratings)	£22.83	£22.83	7% below
iBOSS PLA+ Pink Filament, 3D Printing Material, Hard and Durable Filament, 1.7	PLA+	1 kg	★★★★½ 4.4 out of 5 (779 Amazon ratings)	£23.03	£23.03	6% below
PLA Filament 1.75mm, GIANTARM New PLA 3D Printer Filament 1kg Spool (Transpare	PLA	1 kg	★★★★½ 4.4 out of 5 (232 Amazon ratings)	£23.07	£23.07	9% below

Guides

• Bed adhesion: what actually works
  Glue sticks, hairspray, rafts, brims and expensive surfaces — an honest ranking of what fixes prints coming loose, starting with the free fix that solves most cases.
• Do you need a filament dryer?
  Wet filament is real and ruins prints, but a dedicated dryer is not the only answer. How to tell if moisture is your problem, and what to do about it.
• Filament storage: dry boxes, vacuum bags and desiccant
  Keeping filament dry is cheaper than drying it out. What actually works, what desiccant to use, and why the little sachet in the bag is already spent.
• First layer calibration, properly
  Nearly every adhesion problem and half of all print failures start in the first layer. How to set Z offset by eye, and what a good first layer actually looks like.

Best-selling Filament by year — which actually sold best, going back several years, ranked by sales position rather than opinion.