Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to buy duty free [title] Find a duty-free store. [step] The first step to buying an item duty free is to locate a duty-free store. Duty-free stores can typically be found at any location that caters to or serves international travelers.

Ending1: [substeps] Many duty-free stores operate at large airports. Find the correct store location online through the u.s. Ending2: Common locations for duty-free stores include international airports, towns and cities along an international border, cruise ships, ports, and on board certain international flights. [title] Determine if it's worth buying duty free. Ending3: Duty-free stores specialize in international travelers' goods and services, such as food, cosmetics, and beauty products. Processed foods at restaurants and convenience stores often will be no use to you, so if you are in need of a service or food service, check local for a duty-free store. Ending4: You can find the nearest duty-free store at :. [title] Examine the items you want to buy.

Answer format: ending1/ending2/ending3/ending4