A Google Play update will allow users to place items on a wishlist for later purchase. The update is slowly being rolled out on a per-account basis. If you have version 3.9.16, a bookmark option will be added to the top right of you screen when on an app page.
Some Android users may have encountered the update already. By tapping the bookmark option you can later access your full list of products through the “My Wishlist” setting. Although this isn’t going to revolutionise the way devices can be used, it’s a handy addition to the service.