You must cause any work that you distribute or publish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License.
Am I correct in my understanding of GPLv2? Do I have any recourse, and related, should I do anything about this? I don't care about money, I just don't want someone selling stuff that I released for free. How do most developers/organizations deal with licensing infringements of this type?"