The higher level packages will have all the features of the lower lever package but more premium features. We provide 3 levels of the package as below:
The advanced package ($399): It is a package with Standard plugins; Price Matrix and Order upload are the most outstanding features available in this package.
Premium package ($499): It includes Advanced package + Powerful plugin- Online Designer + other Sales and Marketing plugins.
Enterprise package ($799): It includes Premium package + some powerful plugins for Enterprise business such as CRM, Multi-vendor…
You are recommended to refer the premium or enterprise package because they include Online designer tool- a necessary feature for printing business. For more details, please read carefully at this link: 

https://cmsmart.net/wordpress-themes/tshirt-printing-store-ecommerce-website-with-online-designer?layout=pricing#solution-pricing