Starve on. Then buy stuff with the $100 later.
What would you do if your friend is asking you if you can attend this event with them while you're visiting them in another city but suddenly your other friend tells you they forgot to buy you your train tickets?
What would you do if your friend is asking you if you can attend this event with them while you're visiting them in another city but suddenly your other friend tells you they forgot to buy you your train tickets?