True Magnesium TTs are seldom seen, and require a lot of maintenance. Personally, I think they're much cooler than the later aluminum versions.
Price/value? What are they worth to you and can you afford them? That's all that matters. If you think you gave too much for them and someone asks, tell them you gave a fair price. It's no one elses business anyway.
Check here:
http://www.torquethrustcentral.com/