The AliExpress shopping cart functions as a central hub for managing, updating, and purchasing items from multiple sellers in a unified checkout process, including specialized options like Choice and Local Region carts. Users can encounter issues with missing "Add to Cart" buttons for certain promotions or price discrepancies, which are often addressed by reviewing seller ratings and checking shipping limits. For more details, visit AliExpress . How to Add Items to Cart on AliExpress 2023?