It sounds like they may not be compatible with US TV systems:
from the website:
Series 2 Series 1
Buy the DVD
Thank you for choosing to purchase a DVD from the Through The Eye of The Judge DVD Series. Please note, DVDs are region free though not compatible with ntsc tvs that are in parts of Canada and America. Unfortunately, a ntsc version of Series 2 is not available at this time.
Perhaps someone more familiar with the difference in US/European systems can clarify.