To act as an incentive for people to confirm early rather than wait to the end and see who else is going, the first people to buy a ticket to the event get a discount on the original price - kind of like a group deal! The discount is designed as a reward and to encourage people to signup early.
For every person that buys a ticket the price increases slightly to encourage people to act early, or if they are still shy they can wait it out to see if anyone else is going and pay that little bit extra.
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