One of the few available polarized LCD 3D Displays is the LG 47LD950. As of today the lowest internet price is ~1.000 Euro.
Hyundai has also some polarized LCDs available pdf but the 46″ sized displays internet price is now arround 9.200 Euro.
The last polarized display I found is the JVC GD-463D10. The internet price is arround 5.200 Euro.
What’s the reason for the huge price difference? I don’t know.