A Shake Shack customer has allegedly disclosed the price change when a customer chooses not to tip. No comments from Shake Shack were found. In the video, the man shows the drink prices at $5.99 before he went to the next tab to select the tip. Shake Shack is doing people dirty. Despite the video going viral and viewers sharing their opinions, Shake Shack has not commented on the alleged concern, and the incident is not independently verified.