That is true. I got everything on sale, so wasn't thinking straight when I posted that. I paid next to nothing and still got the full boat in packaging - they even threw in a Mr. Porter branded suit bag and another bag for free! But if I'd paid retail, you're right - I wouldn't be so surprised.
I love Mr. Porter's packaging too. There's something about getting a white suit bag with a personalized placard with your name on it that just instantly cements something as "yours". It does tend to make things harder to return from a psychological angle.