Alright, I'll be the black sheep and say I don't think it's excessive for 99% of the population.
Sure, most every one of us has 5-10 or maybe even a few dozen old nozzles laying around and could easily make this for another $5 in parts, but we're like about 1/2% of the population. The typical interior decorator that's making some sort of theme room to stage a model home with wouldn't know where to begin to get a nozzle, then do the work to wire it all up. They would be spending that much in a run-of-the-mill sconce from Home Depot, but then it would have to be hard wired in.
I kinda like the way it looks like the light is flowing out. Here's a similar idea I put in my daughter's room: