I'm not aware of the current information about 银泰百货旗舰店 (Yintai Department Store flagship store) selling gold、However, I can suggest some possible ways to find the information you're looking for:

1、Check their official website: You can visit the official website of 银泰百货 (Yintai Department Store) to see if they have a flagship store that sells gold or any related products.
2、Contact their customer service: You can reach out to their customer service department via phone or email to inquire about their products and services, including gold sales.
3、Visit their physical store: If you have a physical location of 银泰百货 near you, you can visit their store and ask about their gold products.

If you're looking for information on gold sales or prices, I can also provide some general information on gold market trends or help you find online marketplaces that sell gold、Please let me know how I can assist you further!