You can purchase Glekk WordPress Theme under the Regular License or Extended License.
Key Differences Between Licenses
In simple terms, the main difference is that under the Regular License, your end product (incorporating the item you’ve licensed) is distributed for free, whereas under the Extended License your end product may be sold. But of course, everything is much more complicated, therefore please do read the licenses and FAQs for more details!
You can find full detailed information about licenses here.