Popular burger chain claims saving 50% in payment processing fees [https://www.thestreet.com/.image/t_share/MjE1MTk5NzU5MTUxOTMyNzgz/gettyimages-1446996030.jpg] Popular burger chain claims saving 50% in payment processing fees Steak 'n Shake is one of the first major U.S. fast food chains to roll out global Bitcoin payments. [https://www.thestreet.com/crypto/innovation/popular-burger-chain-claims-saving-50-in-payment-processing-fees]