Some importers are banding together to manage higher costs and ensure supply, while others warn that consumers may eventually have to pay more. SINGAPORE: At family-owned store Hamad Traders in Little India, shelves are lined with dates from Saudi Arabia and Iran, chickpeas from the United Arab Emirates, and olive oil from Palestine. Owner Ahmad Ramzani typically flies in shipments to Singapore every two weeks from various countries, as well as from a warehouse in Malaysia. But with flights