Photo of Connecticut McDonald's $18 Big Mac meal sparks debate online

An image of McDonald's menu this week went viral because people couldn't believe the prices depicted. Twitter user Sam Learner says he snapped the photo at a McDonald's located at a Connecticut rest stop. In the photo, a Big Mac combo meal – with fries and a soft drink – is $17.59.

Other combo meals, like a Quarter Pounder with bacon and cheese, are priced at $18.99 in the photo. Menu prices for many restaurants are often higher on delivery apps than in-store. On GrubHub, a Big Mac combo meal from the Darien location will set you back $21.59. 

The high prices stand out, considering the fast food chain is known for low-priced food and even boasts a $1 menu at many locations.