1. Choi is a real estate agent who has entered into a contract with Marta to try to find a buyer for her house. If he is successful, he will be paid a commission of 6 percent of the sale price. Marta is asking $150,000 for the house. Choi believes the house is worth more than $200,000. Is there any reason why he should not buy the house himself for $150,000 and then resell it at the higher price? Explain your answer.