It is if you insist on English language menus. And a Parisian restaurant meal, good or poor, can cost a fortune. For good, reasonably priced meals, look for restaurants in residential or business districts that cater to a local clientele rather than tourists. Don't worry about not speaking the language. If you're adventurous, just point to something on the menu.
Chance are it'll be delicious even if it is calves' brains.
If you're not quite that adventurous, use a pocket guide such as Marling Menu Master to look up key words. Or point to tasty-looking dishes ordered by other diners. Your server, who in a family restaurant is often also the owner, will likely be willing to work with you and your pigeon French because, unlike the server in a tourist joint, he's not sick of the sight of foreigners. Wine is usually the most expensive part of your meal. The Bateaux-Mouche cruise boats that ply the Seine are famous, featured in every film or book set in Paris, and correspondingly expensive.