Compare the dollar prices and proceed to marvel at how life is more or less expensive in each country.
This is what The Economist magazine started doing 31 years ago.
For example, a Big Mac in Switzerland will cost you US$6.74, while in South Africa the sandwich will cost you US$2.26. Factor that into your travel plans!
Works well for yen, peso, pounds and many destinations.
Even though the Big Mac is most expensive in Switzerland, it takes only 10 minutes to earn it. Whereas in Egypt it is the cheapest (US$1.75), but it takes the average worker 62 minutes of labor to afford one.
The chart displayed in this recent article in The Economist will show you where to visit for bargain dining.
Now, if you'll excuse me, I believe it's time to spend some Euros on lunch.
Best regards, Peter