Your Printify Account can be used as a standalone platform for making sales.
However, Printify does not provide a storefront that would be accessible for your customers. This means that your product listings and orders would have to be managed manually. You can download your product mockups, and place them in your store. Then, once your customer orders an item, you can fulfill it on Printify by placing a manual order.
You may consider to connect a sales channel of your choice. For instance, Shopify, Etsy, WooCommerce, Wix, eBay, or your custom store (integration through API).
You can read our integration guides for each one of these sales channels by clicking here.