|Buyer will make payment in full, including all applicable taxes and duties, before removal of the Goods. Any partial payments for goods made to DUPONT are non-refundable. Payment will be by certified check, bank money order company check or wire transfer, at DUPONT’s discretion. A refund to the Buyer, or additional payment by the Buyer shall be made to account for differences in quantities received versus quantities bid. Buyer shall advise DUPONT in writing of any discrepancies within 48 hours of collection.