Question

Costco requires customers to perform many shopping functions during the purchasing process and all nonessential customer services have been eliminated. what level of service does costco offer?

Answer 1

In this case, Costco offers Self-service retailer
Self-service retailer not only give the customers more freedom and leisure,  will help costco cut down the average wages needed because it need lesser employees so they could allocte it to increase the wages for the necessary employee.  Currently, this model is used in almost every supermarket in all over the world.