Check your local glass shops if they order glass from Pilkington (www.pilkington.com) and ask about pricing on Mirropane and Mirroview. Mirroview costs over here around 1100sek/sqm (thats about 130usd/sqm) but do note, that is just material costs, if you want it cut to shape, smoothed edges etc it will cost more.

Thanks for the response. I ended up buying a two way mirror sample (1/8" thick) from twowaymirrors.com. As long as the monitor is completely flush against the back of the mirror, the reflection is identical to that of a regular mirror. :) So I think I’ll go with a real two way mirror as opposed to a film. Cheers!