Great quality Matte Black PLA filament $18/kg (normally $28) plus delivery. Note that I'm Perth-based so delivery is cheaper for those in WA.
If you're needing to print something stealthy, fill yer boots!!
Delivery available Australia-wide, or you can pickup if you're based in the Perth area or willing to make a big trek. :)
Do you do any real metal (copper brass or bronze) blended fillament?