I just chatted with Canon. the rep said that it comes in a plain white box.
I emailed amazon to ask whether the bulk packaging the manufacturer send a refurb in counts as original packaging for "like new" condition.
I'll report back when I have an answer
I already processed 8 trade ins across 4 accounts - luckily I got in before the DD effect kicked in.
Waiting to hear back about packaging before I make a purchase.