I'm looking at a way to retrieve these info from the shopping cart page, and hopefully someone can give me some insight:

Sub-Total:

Shipping:

Tax:

Promotion Discount:

Credits:

Gift Certificates:

I figure out I can use Shipping estimator code for the shipping fee, tax and final total(after tax, discount etc) are a bit more confusing as it seems to be all over the place. I also wonder if Coupon can be applied even without login in.

Regards