An acquaintance of mine has a clothing store and would like to create an e-commerce site on shopify. I have some experience in creating sites on this platform and so he asked me if I can do it, it ended up here no problem. He rightly asked me to prepare a quote for him, and here I am in trouble. I don't know what questions and information to request and how to estimate an adequate price for the service. it is the first time that I am faced with such a situation and I don't know how to behave.