Hopefully this will put a dent in SMART's Sympodium series, which in my experience is vastly overpriced for the way it's used.
Three grand will buy you a pen-screen monitor that is wired in-between the computer and projector.
Because of the cost, most places will not buy dedicated podiums: ours had to be carted around and wired into the computer setup for each professor.
An iPad is much, much more easy to deal with (everything's one unit) and there's a likelihood that the professor may have one of her own, meaning the tech doesn't need to set up what's needed.