I see cheap LCD TV's of 40" or more for sale at Fry's for $600 or so all the time. I think that's your answer. As for what's used at trade shows, just that, lar

I see cheap LCD TV's of 40" or more for sale at Fry's for $600 or so all the time. I think that's your answer. As for what's used at trade shows, just that, large TV's, and they're rented at exorbitant rates! Going to be next to impossible to find something without audio or a remote, and if you do, it will be a "monitor" designed for high-end use and will be way to expensive.