'The popcorn comes at a price', 'The popcorn is just not free', 'The popcorn Charge $ten', 'It's important to pay for the popcorn' or, just, 'The popcorn isn't really free'. The statement, 'You can take your baby on the flight free of demand' could be in opposition to 'You need to pay back to acquire your child on a airplane' or 'It's actually not