FAQ: Why do you have memberships rather than tickets?
The story is rather complicated and somewhat lost in the mists of time.
Suffice it to say, we (the Convention Committee) really like you guys. Heck, we *are* you guys - we started where you are now, we love Discworld, and we pay to go to the Convention, just the same as you. So the idea of having 'customers' (people who buy tickets) is much less appealing to us than the idea of us all being members of the same, exclusive club.