Google Brings Deals to Shopping Tabs (US only) Upload for Free via Merchant Center
https://support.google.comWhen shoppers scroll through the results page on the Shopping tab, they will now see a new “Deals related to your search” prompt that highlights the most competitive deals based on discount. By uploading your promotions in Google Merchant Center, relevant products will automatically be eligible to be included in this new deals experience.
Promotions and deals uploaded in the Merchant Center will be automatically surfaced to deal-seeking shoppers on the Shopping tab, regardless of whether businesses advertise on Google. Deals will also begin to appear on the main Search results page in the coming months. Offers are shown based on factors such as the discount itself, how popular a product is, how popular the site it’s listed on is and more.