kexcelled Matte PLA Filament，Matte Coffee Brown Dark Brown PLA 3D Printer Filament 1kg Spool (2.2lbs) with +/- Accuracy,Upgraded Tangle-Free Winding

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.