People above said this is probably just using the $ for pesos, which would make this about $2USD.

As for US food prices, it varies a lot depending on where you are. Where I live, fast food meals are usually $7-10 and nicer sit down restaurants are $10-20.

I visited Norway about 10 years ago, at the time the food there was more expensive for a lot less food. The drinks weren’t unlimited refills either. Beautiful countryside though.