'The popcorn comes at a value', 'The popcorn is not free', 'The popcorn Charge $ten', 'You have to pay for the popcorn' or, just, 'The popcorn just isn't free'. The statement, 'You can take your toddler around the flight free of cost' might be in opposition to 'You should pay to get your newborn over a airplane' or 'It's not free', or informally, '