How much your store will cost depends on how much experience you have with managing websites. If you know your way around a website, it will cost very little. The cost of the WooCommerce hosting provider, domain name, SSL certificate is all you need to get started. WooCommerce itself is free, setting up is often done for you and the stock is down to you. If you’re inexperienced, you may want to work with a web designer or developer to help set things up. You can hire these online for not a great deal of money and they could help you set everything up. Your web host may offer setup assistance for a modest charge too.