Edel and Axis-1, among other companies, actually also made true torque-balanced or lie-angle balanced putters.
There was one company from Hawaii, if I am not mistaken, that makes a wooden lle-angle balanced putter that looks and sounds really nice. For the life of me I can't remember the name of the company, though. Mr Short Game has a video up on Youtube reviewing it.
None of these putters is economical.