[metadat]

Small correction: Copper is currently around $9 USD/Kg.

[CameronNemo]

Which is just about $0.01/gram, as the commenter stated.

[metadat]

Parent originally stated $4/gram. Perhaps the post was amended without notation.

Edit: @bragr: No worries, I'm just bad at reading sometimes or possibly even all the time. My mistake.

[bragr]

I literally added a whole "edited: ..." line to the end when I updated it.