The Problem

You're expecting a particular shipping method to display for an order and it's not available.

...

View the links for the item you're having trouble with

Copy the buy link into a new browser window to create a cart with that item

On the cart screen that appears, click the 'Actual Shipping' link

Enter location information into the form

Back on the cart page, click the 'View Packing Solution' link

Review the packing solution for information.

Scroll to the bottom and review the section 'No Estimates for Shipping Methods'