code: def get_item_prices(self, package_id):
          
          mask = 'mask[pricingLocationGroup[locations]]'
  
          prices = self.package_svc.getItemPrices(id=package_id, mask=mask)
          return prices
docs: Get item prices.
  
          Retrieve a SoftLayer_Product_Package item prices record.
  
          :param int package_id: package identifier.
          :returns: A list of price IDs associated with the given package.