Hi, by calling GetItem I can retrieve coupon code eligible for a particular item. However, it doesn't return store wide promotion details.
For example, this item
The GetItem call returns the 15% coupon, but not the 10% store discount. It does include the subtitle which says the 10% discount but it's not a reliable way because the seller may not add that piece of info to any description of the item. But you can see the 10% on the top of the item webpage.
Having tried several API calls with no luck, I'm wondering if the great developers from the forum can shed some light.