You have to balance the value (which I think to be honest you overstate - how hard is it really to find somewhere with safe and clean food that you like) with the costs. On the latter, I am mostly thinking of the health effects of their food.
In India, Egypt, or Thailand? Where bacterial flora and local food are so different from what Europeans and Americans are used to that you end up sitting on toilet for first three weeks of stay?
http://www.businessinsider.com/how-to-lose-weight-eating-onl...
There was a teacher who had his students pick what food he ate from a McDonald's and count the calories and other stuff and he lost weight as a result of eating at McDonald's.
Sometimes eating less food is more. You really don't need a double quarter pounder and stuff like that. You can get buy with a McDouble or Filet O'Fish instead.