It's Your Birthday

It's Dr. Bindlebeep's birthday and just to make sure he gets something nice, he slips each of the kids a little extra money for his gift. All seems well as the family heads off to the mall to shop for Dr. Bindlebeep's presents. Just as Angie is about to buy her father a very nice fountain pen, to add to his pen collection. James, the most popular guy in high school strolls into the store and says he'll take Angie to a concert that night if she buys the tickets. Angie doesn't have enough money for a nice present and concert tickets. What will she use the money for?