If you want a lot of calories for little money, this is one option. And for good measure, I've added a sugary drink to make it a "complete lunch". It isn't the most healthy option but it is very tasty and I enjoy it from time to time.
In this case, there likely was a mistake -- I got charged a mere 2.50EUR for all of this incl. the soda. I think I paid for the soda and got the food for free.

.

Curry Pommes