:yeahthat:I only buy $5 sunglasses because I lose them all the time.
The problem with polarized sunglasses is the LCD displays are difficult if not impossible to read. If you fly an old "steam gauge" cockpit, it is not a problem. During the Viet Nam era, the military routinely issued them to pilots.
If you want to get some with plastic lenses for $93 or polycarbomite lenses for $133, go to http://www.eyeglassdirect.com