He was seen working at the cash register in the beginning of the episode. He later asks SpongeBob if he was going to pay for the stack of comic books he was holding. SpongeBob says no because Patrick took his $100 bill from his wallet when it dropped on the ground. He then kicked SpongeBob out of the store.
SpongeBob and Patrick are at the comic book store where SpongeBob are buying Mermaid Man and Barnacle Boy trading cards. He tells SpongeBob about a rare holographic animated talking card, and how there is only 5 in existence. SpongeBob then buys more trading cards, and doesn't get the rare card, until Patrick buys a pack of cards which has the rare card in it.