You didn't name the product, but the general rule is if that anything qualifies for free flat pack shipping to the US or worldwide, it will state so very clearly under the title header for the effect.
Here's an example:
http://www.penguinmagic.com/p/9223
Beyond Perfect qualifies for free worldwide shipping...
If the product you're asking about has this notifier, then, good for you.
If not, then you're paying for shipping.