The Battle.net shop Wish List is feature that lets you save products you’re interested in. Battle.net friends can view each other's Wish Lists so you can easily locate the perfect gift.
Adding Products to Your Wish List
Go to the Battle.net shop page of the item you'd like to add and click “Add to Wish List.” The product will appear at the top of your Wish List page.
Setting Wish List Visibility Options
By default, your Wish List is visible to your Battle.net friends. To make your Wish List private, toggle the visibility setting on your Wish List page.
Viewing Your Battle.net Friends’ Wish List
On the Wish List page, click on your friend’s name. If their Wish List is set to be visible, you will see giftable items they've added to their Wish List.