$0.64 Arby’s Roast Beef Sandwich on 7/23 This post may contain affiliate links. Please see my full disclosure policy for details. July 19, 2011 19 Jul Pin0Share0TweetGoogle+0shares On July 23rd you can get a Roast Beef Sandwich at Arby’s for only $0.64. Just head over to the Arby’s Facebook page and like them and then head back on Friday to get your coupon! I will post a reminder on Friday. Thanks, The Brainy Buyer!