You seem to be too generous, Lauda. Plagiarism, in my opinion, should be dealt with a perma-ban hammer at the first offense.
There is just no excuse.
For lower ranking randoms (most often trying to get quickly into sig. campaigns), sure. For established traders who didn't know better? No. I'm pretty sure we had cases like this one before (or at least one-time established member violations that didn't get banned; unless my memory is fooling me).
for copy and pasting, but then later unbanned. Not sure if there's any other cases though.