Our most expensive meal (at a lovely sit down restaurant in the park for 2 adults and 2 children) was about 100 Euros.
The snack type places for pizza, burger etc worked out about the same as WDW (exchange rate dependant, obviously).
Disneyland Paris is relatively more expensive than WDW I agree but just the thing for a Disney taster. I always travel in school holidays and there is no way it would be cheaper for me to go to WDW (onsite).