Ok, thanks for the info. It did take a really long time for them to pick the books, but shipping was still a bit long. I'll definitely go with FedEx next time.FedEx is usually like 3-4 days, but it usually takes longer for IST to "pick" all your books than it does for it to get there.
Also, sometimes the FedEx upgrade is free or reduced price, but I don't know how to qualify for that.
I think you need to buy $50 of books or more to get the upgrade for free (not positive though).