Attendees can then scan the card at any of the machines, choose between four beers -- Bud and Bud Light for 38 cents per oz, Shock Top Lemon Shandy and Goose Island 312 Urban Pale Ale for 40 cents per oz -- and control how much they want poured at a time. Customers will be able to use their cards to pour up to 48 oz every 15 minutes.