Would it cost me as much as a new 3D printer? ($190-$500)
Edit (after Karl Dha'Werda pointed out my silly mistake below, sorry everyone):
$300 for mild steel, $350 for stainless steel. Might as well just do the stainless at that price, if it's only $50 more. But still, ouch again. I think I could make my own out of aluminum for less, once I 3D print one to use as a form to cast in aluminum.

But then again, steel vs. aluminum. Aluminum = lighter, Stainless = shiny. SHINY. MANDOS LOVE SHINY ARMOR. At least this mando does! You might be able to get aluminum to a bright enough polish, with care and the right compounds/grinders/buffing tools.
I know it wouldn't be shiny, but if my automotive emblem scheme pans out how I think it will, I could potentially nickel-plate the 3D printed mando helmet. Of course, I would need to make sure it was VERY smooth before, but that's doable, at least with sanding, bondo, and a resin coat. Throw in some filler 2-in-1 primer while I'm at it, so the 841-AR shielding paint sticks.
FYI, the shielding paint (electrically conductive paint) comes out like a mid-high-grit sandpaper if you don't spray at a low angle. Sanding between coats works really well to smooth it out.
-- Hodayc Goran
P.S. I wonder if their Din Djarin V2 chest/abs single plate with backplate would be approvable:
https://hbcarmorshop.com/products/mandalorian-beskar-metal-body-armour?variant=41574258770102Actually, probably not, unless you cut the chest off of the abs, shortened the abs, and made sure the two parts are separate. I'll have to check the PI CRLs again.