Information about ExpressionEngine license

As its not a Free and Open Source product, License is required for use it fully. It has 3 types of Licenses: - Core, Personal & Commercial Licenses.

Core License: - Free for personal (non-commercial) or non-profit use only. It comes with no technical support.
Personal License: - Personal (non-commercial), or non-profit use only. USD 99.95 only.
Commercial License: - For use in, or in conjunction with a commercial, or for-profit endeavor. USD 249.95

There are some additional cost for updates, Forum modules and others.

Core License:- Users of the Core License may use the Software only on a website engaging in personal, non-commercial, or non-profit activities.

Personal License:- Users of the Personal License may use the Software only on a website engaging in personal, non-commercial, or non-profit activities. One license grants the right to perform one installation of the Software. Each additional installation of the Software requires an additional purchased license.

Commercial License:- Users of the Commercial License may use the Software on a website engaging commercial or for-profit activities. Websites engaging in direct or indirect commercial activities must purchase a Commercial License. One license grants the right to perform one installation of the Software. Each additional installation of the Software requires an additional purchased license.

Get ExpressionEngine Pricing-details from http://expressionengine.com/overview/pricing/

When you purchase either a Personal or Commercial License you own it forever. You can use the license as long as you want. Each license purchase includes one free year of access to that license’s Download Account where you can download the latest version of ExpressionEngine you own. After one year, if you want to continue accessing the Download Area you can purchase a yearly renewal for $19.95 (Personal license) or $39.95 (commercial license).