Do I have to register to your site before I can purchase?

No you don’t have to but it’s highly recommended. You won’t get access to support forums, documents or your account page if you don’t register.

Do I get automatic updates from dashboard also for commercial themes?

Yes you do. First you need to set your license key under Appearance >> Theme Settings (or Theme License) and activate your theme. You can see your license key in your account page or from email you got after purchase.

Can I use your theme in many different sites?

Yes you can but license key is valid only for 1, 2-4 or unlimited sites depending what license you purchase. You can also purchase theme again to get another license key. Or you can always manually download latest version from account page.

So basically license in this case means that you get automatic updates. License is valid for one year. This used to be twenty years but January 8, 2014 I changed this to one year. If you purchased something before this date you still have 20 year license.

When you renew your license you get 20% discount automatically.

Do I get support for life or for one year?

This also depends what license do you purchase. For now support are for 6 months, 1 year or 2 years. It’s important to note that you also buy support, not just theme or plugin.

Are your themes 100% GPL?

Yes they are. Please let me know, if you find something in my themes or plugins what is not compatible with GPLv2 or later.