The companies IllusionMage and 3Dmagix resell via their websites Blender under their own name. Both websites are probably managed by the same person or company.
On their web pages they intentionally hide that the products are distributions of GNU GPL licensed software, and that the software is freely downloadable as well. More-over, even after contacting them several times, they don't remove copyrighted content from their websites. Rebranding and re-distributing GNU GPL software is a key right. This doesn't give the right to then also rebrand the credits, claims and artwork as created with Blender.