It is important to offer an after-sales service or a return policy in case of dissatisfaction. This gives a good image, in addition to encouraging customers to come back and stay loyal. Keep in mind that it is much cheaper to retain existing customers than to acquire new customers. Evaluate what your target customers might be looking for in terms of customer service policy, then estimate if it will be profitable for you. For example, you can design a loyalty card that gives certain benefits to loyal customers. However, it must be ensured that the after-sales service will not cost you more than the profits generated.