FAQ:Can I sell models created with MakeHuman?
From the license section that applies to the exported models:
You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
With all normal usage of MakeHuman (i.e basically using the GUI in any way you can think of), the exported models end up being licensed CC0 (Creative Commons Zero). This is basically the most liberal license in the world, and for all practical purposes it places no restrictions on the licensee.
For a more thorough explanation of the license setup, please read http://www.makehuman.org/license_explanation.php
(the full license text is available at http://www.makehuman.org/license.php)