Restaurant.com: New 80% off Code ($25 Dining Certificates for $2)December 26, 2011 This post may contain a link to an affiliate. See my disclosure policy for more information. Restaurant.com has released a new coupon code! Through December 31st, you can use code SALE at checkout to get 80% off most Restaurant.com certificates. This makes a $25 certificate only $2!These are great ways to save on dining out, and would also make a great anniversary or birthday gift, or even a holiday gift!