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It's worth noting that the McCallisters did not appear to be covering these lofty expenses themselves. We learn from Kevin's mother that they are traveling on her brother-in-law Uncle Rob's dime. Not only does Uncle Rob provide airfare for the entire family, he's portrayed as owning a lavish apartment in Paris with captivating views of the Eiffel Tower. Owning such a property would significantly contribute to Uncle Rob's wealth, quantifiable by today's standards at over $6 million.