The software in the Non-Stop Open Source E-Commerce Pack is provided AS-IS with NO WARRANTY. Use at your own risk.
Each component of the Non-Stop Open Source E-Commerce Pack contains it's own license. The product as a whole is freely distributed under the terms of those licenses. Most components, including all components licensed under the GNU General Public License (GPL), do not prohibit you from copying, modifying and/or reselling those components, for any price you want.
See the individual COPYING, LICENSE or README files for a component for specifics with regard to licensing and redistribution of that component: