Power store does not offer item specific shipping for different locations.
it would require using eCart to edit the power store cart object, adding a column for each region to the cart object, editing the eCart add to cart buttons and product database to get the different item shipping amounts, and configuring the shipping rules to use thise. We will not be able to offer support for this type of modification through the forum, If you need assistance setting this up, I would suggest signing up for a premiere ticket.