#1 - Simple Purchase - Place a PO with supplier - Additional freight charges incurred - Adds freight charges to product costing (on average, based on value) #2 - Complicated import and distribution - Place a PO with supplier - Pay in Secondary currency - Wait for product to arrive at port - Wait for product to arrive, receive freight invoice - Add in additional expenses incurred - Adds all charges above as an average to the products based on per value These 2 can be done easily if we manually calculate the costing separately from OpenERP but we wish to implement the whole system properly.

https://accounts.openerp.com/forum/Help-1/question/How-to-Calculate-landed-cost-in-open-erp-53747

you can also take help of this, if not taken yet. https://doc.openerp.com/6.0/book/4/4_10_Accounts/4_10_Accounts_place/