여기에 대해 많은 의견이 있는데요, Envato에 문의하여 다음과 같은 답변을 받았으니 참고하시면 좋을 듯합니다.
The need for an extended license versus a regular license will depend on how the end product will be distributed.
Regular licenses are meant for items used in end products that are accessible without extra fees. In the case of websites, it applies to sites which visitors can access free of charge. This includes eCommerce sites, as visitors pay for the physical products and services available, which the theme/template is not implemented into, and not actually for access to the site.
Extended licenses allow you to use the item in an end product which in turn is sold, with the authors permission. If the site charges a membership or a fee to be able to access content/functionality, then, an extended license is required. The perfect example for this would be an eLearning website, where people are charged to access content/courses in the site.
If you are making a website for yourselves or business, you should get a regular license
If you are making a website so you can sell the result to someone else, you should get a regular license
If you are going to charge a fee to use the website in any way you need to get an extended license
If you are selling products with an integrated shopping cart, you can get a regular license
If you need to use the same item for another website, you need to get another regular license.
More information can be found here – http://themeforest.net/licenses
조금 정리해보면 테마의 콘텐츠/기능을 사용하여 비용을 청구하는 경우 Extended 라이선스를 구매해야 하고 그렇지 않을 경우 Regular 라이선스를 구매하는 것이 맞을 것 같습니다. 일반적인 eCommerce 사이트는 (테마의 기능을 이용하는 것이 아니기 때문에) Regular인 반면 eLearning 사이트를 구축하고 회원들에게 비용을 받으면 Extended 라이선스가 적용된다고 예시되어 있습니다(참고). 그러므로 1사이트에 1라이선스만 준수하면 문제가 없을 것 같고, 다만 Regular인가 Extended 라이선스를 선택해야 하느냐를 판단하면 될 것 같습니다. (보통은 Regular로 충분하지만 위의 예를 든 eLearning 사이트의 경우 Extended 라이선스를 구매…)
