Theme license for sandbox and website

Hello,

I am in the process of creating a new website for a client. I would like to purchase a theme, this one: https://themes.waituk.com/entrada-default/. The problem is that I will be developing the website under sandbox.myagency.com/client/ and then will move it to clientsite.com. It is enough to purchase a single license or do I need to buy this theme twice?

Thank you :slight_smile: