I kind of enjoy playing with different colors and wraps when I'm building arrows. Using fast set glues I can still do a dozen arrows in a couple of hours with my Bitz.
If you factor in the savings of buying shafts instead of prefletched, or buying the shrink wrap kind I think you'll find you're money ahead within a few years of buying the jig. I just bought 200 AAE vanes for a grand total of 17 bucks. That's six dozen arrows = 3 bucks a dozen to fletch. By the time I fletch those six dozen arrows I've paid for my Bitz if I compared the price to shrink wraps or buying prefletched. That isn't even factoring in the convenience of redoing arrows that you cut a fletching with a broadhead.