A certain amount of deposit is required, and the specific amount depends on the policies and requirements of the Doudian platform. Because the Doudian platform usually requires sellers to pay a certain amount of deposit to ensure that the seller has a certain level of financial strength and integrity, and at the same time, it can also avoid sellers from maliciously placing orders and other violations. The specific amount of the deposit can be checked on the Doudian platform. The relevant policies or contact customer service for consultation. In addition, Doudian needs to pay attention to market demand and competition when selling socks, and choose appropriate marketing strategies and product positioning to achieve certain sales results and profits.