Is the price of the theme one-time or recurring (monthly/yearly)?
The payment is one-time. After you pay the one-time price of the theme, you will never be charged for it. But you can buy extended support after your support expires after 6 months.
Point of Sale Management System (Web) for a new point of sale (POS) system, you can get overwhelmed pretty quickly. There are hundreds of options online, each boasting all sorts of features. It can leave you asking yourself, “What do I really need? What extras will help me grow?”