They claim that they match in-store prices: https://support.google.com/shoppingexpress/answer/4559805?hl=en&ref_topic=4541993 https://support.google.com/shoppin

They claim that they match in-store prices: https://support.google.com/shoppingexpress/answer/4559805?hl=en&ref_topic=4541993 https://support.google.com/shoppingexpress/answer/4559805?hl... Essentially, you're paying them to go to the store and pick up the item for you.