Before you start negotiating, it's essential to understand the payment terms available and how they can impact your cash flow and risk exposure. The most common payment terms for importing goods are advance payment, letter of credit, documentary collection, and open account. Advance payment requires you to pay the full amount before the goods are shipped; however, this is the most costly and risky for you as there is no guarantee of quality, delivery, or compliance. Letter of credit is a secure and widely accepted method, but it is expensive and time-consuming due to fees and interest as well as complex paperwork. Documentary collection is a cheaper and simpler alternative to a letter of credit; however, it still requires trust and cooperation from both parties. Lastly, open account allows you to pay the supplier after the goods are delivered according to an agreed period of time (usually 30, 60, or 90 days). This is the most favorable for you but also the most risky for the supplier as they have to bear the cost and risk of production and shipment before getting paid.