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Rainbow & gradient filament, 2 kg, bulk and multi-pack, rated 4.5 stars and up, ranked by £/kg

Every listing we track on Amazon UK that matches all of these filters, ranked by £/kg. Remove a filter with its "All" chip to widen the list.

4 listings tracked, 1 on offer right now.

Product	Material	Weight	Rating	Price	Per kg	Deal
IEMAI PETG Filament 1.75mm 2Kg, Gradient Blue Purple/Blue Green Translucent PE	PETG	2 kg	4.6 out of 5 (220 Amazon ratings)	£19.54	£9.77	24% below
Creality 3D Printer Filament 1.75mm, Rainbow Upgraded PLA+ Filament Strong Tou	PLA+	2 kg	4.6 out of 5 (2,042 Amazon ratings)	£23.12	£11.56	Warehouse
Creality Rainbow PLA+ Filament 1.75mm for 3D Printers, 2kg(4.4lb) +/-0.02mm Di	PLA+	2 kg	5.0 out of 5 (3 Amazon ratings)	£28.33	£14.17	19% below
SUNLU 250G*8 Silk Filament Bundle, PLA+ Rainbow Filament Multicolor, Fast Colo	PLA+	2 kg	4.8 out of 5 (47 Amazon ratings)	£34.99	£17.50	12% below

Rainbow & gradient filament by brand

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.