Check out the Aliexpress Affiliate API to get a list of all promotion products.
Aliexpress API Search Results & Alternatives
Related APIs in Category: eCommerce
This is an API to check a website to determine if it's an online ecommerce store. We do this in a few ways -- first we check to see if it matches common e-commerce store platforms (ie. Shopify, Magento, etc). Next we check the page text to see if we can determine it has characteristics of an online store. Finally we parse the DOM, looking for clues to see if it links to the server that has a e-commerce backend.