I always use comparisons for value for money. How much does a Swancon cost? About $150 for 4 days of SF convention. Assuming you only go to 8 hours of each day, that's still $4.60 an hour to be entertained.
A movie at the cinema will cost you $15 for two hours, or $7.50 an hour.
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A movie at the cinema will cost you $15 for two hours, or $7.50 an hour.
The Big Day Out will cost you about $10 an hour.