kexcelled Matte PETG Filament,Beige PETG 3D Printer Filament Matte Surface,Dimensional Accuracy +/-, 1kg Reusable Spool(2.2lbs) Fits for Most FDM 3D Printers

Amazon-only with a wide SKU list: PLA through TPU, including silk and specialty variants. Prices sit at the low end; quality is consistent enough for general use.