Anti-Glare film for storefront window

Has anyone found a supplier yet with reasonable prices?

I have signage (52" in portrait mode) in a storefront window and it is hard to see during daylight hours do to glare on the glass (indirect sunlight).

I'm tempted to just go with a sunlight readable outdoor LCD monitor and mount it outside the glass?

try using some type of matte finish laminate, is the screen directly against the glass?