"Extra rewards" refers to additional benefits or prizes that are given on top of the regular or expected rewards. It is something extra that you receive as a bonus or incentive for your efforts or actions. Full definition
Compare our list of grocery credit cards from our partners to earn extra rewards for purchases at supermarkets and grocery stores. (creditdonkey.com)
You may earn extra rewards for purchases made at a specific retailer, or for purchases within a certain category of consumer goods — like home improvement, travel expenses or office supplies. (complexsearch.com)
Also, we signed up for extra reward points at the grocery store: 5 % when we shop for food and it doesn't cost us anything extra. (thedigeratilife.com)