That was fast! There are no more Checkout 51 cash rebates for Nature Valley Granola Bars and Orville Redenbacher’s Microwave Popcorn and Ready to eat Popcorn. This is for Checkout 51 from May 16-22, 2013. If you have a receipt for these 2 products, you won’t be able to scan in the receipt to claim any cash backs. All offers in Checkout 51 are limited offers. New offers will be out Thursday morning. You can visit Checkout51.com to see more offers this week.