In this scenario, yes, you should wait. If you know that there is a possibility that you won't even show up and that there will be extra seats anyways, there's absolutely no reason you should rush to buy the tickets and risk wasting money.
From the many books I have read I would say the author would use forshadowing or a very short description of the character when introduced.
Answer:
c) When the supply of a product decreases, its price increases.
Explanation:
When there is less supply, there is more demand at the old equilibrium price. This causes a lot of people to compete for the same products or services, which drives up the prices. There is more supply and less demand when the price goes up.
