Worth bying a used 2690 wuxi?

[drtc]

There is a used 2690wuxi ( first gen with polarizer ) available here for 800 euros.
It has 4 burned subpixels and 4 months warranty.
Any suggestions on wether it is worth bying it?
BTW the 2690wuxi2 costs 1200 euros and has no polarizer.