I'll be staying in the Opera district next week and plan to spend a good deal of time walking, from the Arc de Triomphe to, say, Place des Vosges. Now, here's the challenge. I have noted that some of you define an "inexpensive" meal as "no more than EUR 70 per person." Bless your hearts, but I don't want to hear from you. I want to hear from those of you who have discovered delightful places to eat that cost EUR 10 or less. I don't care about ambience or service, nor do I care how many Michelin stars have been awarded. Tell me I can walk into a local farmers' market, buy some bread and meat, a little cheese, a piece of fresh fruit perhaps, take it to Parc Monceau for a picnic, and I will be thrilled. In short, where can I get really tasty, really cheap, distinctly French food in this area? It absolutely must be within walking distance of the Opera district.