GT Solutions is a company from Malaga (Spain) that sponsorized the Open Source World Conference Malaga 2008 and presented EuroGes, a business administration solution, that they claim to be under GPL, but it is a fake.

In their downloads page there are only binary packages and, when someone asked them for the sources, they wanted to be paid to provide them. As far as I know from that license, a GPLed product can be selled, at least in binary, but getting the sources should not add cost to the software. If they let people get the GPLed software for free (as free beer) its sources must be free too.