Far cheaper than Germany or the UK if you play it right. Rental houses are relatively inexpensive, which allows you to use a kitchen for most of your meals, and the French are great about allowing younger children into sites for free, with major discounts for older kids. That year we went to Disneyland Paris we also went to Disneyworld. We spent $6,000 for a one week trip to Orlando, and $9,000 for 18 days in France.