Found a coupon code which knocks 50% off the price of one of these high quality screen protectors. Coupon Code: memday09
Expires: May 27
Tax in CA, UT
Got mine for the 5D MarkII for $6 and $2 shipping (canada). They take paypal also. I've been dying for one of these. I tried the eyepiece extender so that I'd get less skin oil smudges on my screen, but it reduced the viewfinder size drastically and still gave me smudge issues regardless. This will at the very least protect my screen for the long haul of my camera ownership.