This dream may reflect feelings of frustration and injustice in your waking life. The college bookstore represents a place of learning and knowledge, suggesting that the situation may involve an educational or intellectual pursuit. The fact that you were trying to sell books but the cashier thought you were buying them could symbolize a misunderstanding or miscommunication in your waking life. The cashier being on the phone with someone may represent distractions or outside influences that are hindering your progress. The total of $19 to buy the books may symbolize a significant cost or sacrifice you have to make in order to achieve your goals. However, when you try to correct the mistake and sell the books, you only receive 92 cents back, indicating a sense of being shortchanged or undervalued. The cashier’s promise to get your money back once she gets off the phone but never hanging up may suggest broken promises or unfulfilled commitments in your waking life. The two other people waiting in front of you could represent competition or obstacles in your path. Overall, this dream may be urging you to stand up for yourself and demand fairness and respect in your waking life.