I'm looking for a Drupal Commerce Shipping in-cart estimate
link- https://drupal.org/project/commerce_shipping
Commerce Shipping provides a shipping rate calculation
system for Drupal Commerce , integrating shipping
service selection into both the checkout form and order
edit form. This module is a framework that is meant to
be used in conjunction with shipping method modules
like Commerce Flat Rate , Commerce UPS , and others.
Shipping service availability and rate calculation is
handled in the user interface through Rules and is
backed up by an API that gives you a high level of
flexibility to implement simple or complex shipping
scenarios.