Ok, here's what's going on (for others who run into this) - the S&H is "preliminary" until you log in for the checkout. Once you log in and get to the final checkout screen, it knows whether or not to charge the S&H. In my case, when I got to the final Confirmation page, it dropped the additional S&H and only charged me the bare $20.

I assume it works this way to allow customers who pre-ordered digital-only versions to easily upgrade to the LE (which is a physical product and therefore requires a S&H charge).

Something related that I'd like to know (because I first assumed this wasn't the case) - if you buy a boxed version, do you still have access to the digital version and the convenience of an Impulse install?  I guess so since we'd have a CD key, right?

can i downgrade?

I ordered the regular box version. I was excited about the original box version hoping for a nice manual full of lore. But i think the regular version will get jibbed, while the Extra version will get all the goodies. Rather not pay that hefty $10 shipping if im not getting anything cool in my regular CD version.