I don't order from the app, didn't know there were discount there. I probably won't use the app anyways, I think it's ridiculous having to install an app for every fast food place just to get better prices, I'd rather just not go anymore than do that.

And is the meal before/after tax? I distinctly remember last time I was there a few months ago being shocked that the price came out to about $15 per person all getting meals.

You're right, but for someone like me who hate feel hunger just 2 hours after a big mac meal, I must take 2 or 3 simple cheeseburgers + the big mac meal to feel ok until diner. It costs me more than $15. I don't go there anymore by myself unless there is no other options left.

What you are describing is like 1500-2000 calories even if you get a diet soda. At least you'll have to agree that it isn't typical for a person to eat this much in a single meal at mcdonalds.