Google Shopping Product Detail With Track Price, Save & Share Buttons
Briefly

By clicking 'Track price', users will receive push notifications and emails alerting them to price drops and related information, enhancing their shopping experience.
The introduction of 'Share' and 'Save' buttons allows users to easily engage with products, facilitating social sharing and personal organization of items they are interested in.
It appears the 'Track price', 'Share', and 'Save' buttons are relatively new features added to Google Search and Google Shopping, providing advanced tracking options for users.
Sachin Patel noted on X that the 'Save' and 'Share' buttons for product grid results are a fresh addition, indicating ongoing improvements in Google's shopping interface.
Read at Search Engine Roundtable
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