'The popcorn comes at a value', 'The popcorn is not free', 'The popcorn Price tag $10', 'You have to pay for the popcorn' or, just, 'The popcorn is just not free'. The assertion, 'You normally takes your baby within the flight free of charge' could be in opposition to 'You need to spend to acquire your little one on a airplane' or 'It isn't free',