Refill Filament
Refill filaments are sold without a plastic spool: the filament is wound on a cardboard core or delivered as a bare refill. They generate less plastic waste and are generally cheaper per kilogram. A compatible reusable spool holder is required for printing.
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Average price/kg by brand (most common)
eSUN $16 $14–$19 Overture $15 $14–$17 Polymaker $18 $17–$19 Inslogic $56 $44–$68 Creality $12 $12–$13 ANYCUBIC $11 $10–$12 3DTOOLS $22 $19–$25
Price/kg · Min–Max Avg