We track 832 grey filament listings from 119 brands, with prices checked every 4 hours and normalized to a true cost per kilogram.
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The four cheapest 1kg spools by price per kg, each from a different brand.
UJOY3D 4kg Hyper PLA+ Filament 1.75mm Bundle, High Toughness Upgraded PLA+
ANYCUBIC PETG Filament 1.75mm Bundle, 4KG, Reusable Spool, Texture Grey
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