I know TG-16 was not shrink wrapped, not sure about TurboDuo.
BITD, I can say with certainly that many stores shrink-wrapped stuff all the time, for various reasons. For example, returned merchandise. After the original contents were verified, item was shrink-wrapped and put back in stock.
My friend was a manager at a retail store and video games/consoles/music/videos were routinely shrink wrapped.