I tried to find out about free shipping as well , and apparently they never do it. Its always $150 for card members and $300 for people who are not card holders./
I've had this issue too and then noticed that the total is only over $300 with shipping and/or tax included. The $300 has to be achieved on merchandise only (after taking into account other discounts).
I have a $100 code available but want to swap for something else. I'm looking for Victoria's Secret or Sephora stuff. If you have something else you think I'd be interested in send me a PM saying what it is and we can swap.