The project is now free and those who bought it will be issued a refund.
For those of you not familiar with the project, SEGI is a voxel-based Global Illumination effect that aspires to provide 100% dynamic Global Illumination to Unity games and applications. The product requires no precomputation, bringing GI to certain situations.
SEGI provides indirect lighting and glossy reflections from a single directional light, the sky, and any emissive materials in the scene. In the future, SEGI will support indirect lighting from point and spot lights. SEGI calculates indirect light visibility for soft indirect shadows, and also calculates soft sky light shadows. It can render either a single bounce or infinite bounces of indirect light.