The one comment i can make about the cost of something like CGI, or light bulbs is this:
I work at an airport which we spend an insane amount of money on bulbs, lights, and general stuff. The problem is supply and demand, that and your trapped so they know they got you.
THink of it this way. The FAA makes regulations that say a light bulb must be like so. In order to make the light bulb to those specifications, it gets expensive because no one else buys light bulbs like it. Thus it costs alot.
and a $50.00 light bulb is 'cheap'. We have lights that cost a hell of a lot more than that.