Costco Sale: George Foreman Electric Grill $64.99 by Rhonda July 16, 2020 7/5/16. Grill indoors or outdoors. Costco has the George Foreman Electric Grill on sale for $64.99 (after manufacturer’s instant rebate), now through July 10, 2016. That is $15 off Costco’s regular… 0 FacebookTwitterPinterestEmail