the cost is in no way unreasonable; the way i see it is that you're restoring the price of a real wide range humbucker back to what it used to be before the massive inflation that's taken place over the last few years. the prices you estimated are exactly what the originals typically went for on ebay a few years ago when the prices were sane, so to get a faithful reproduction of that design in new condition, for the same price the old beaten up pickups sold for, is a pretty fair deal. it's no small amount of money, but considering that the originals are now climbing towards $600 each, it's still a good value. i strongly encourage you to follow through with your plan, not just because i want one of your pickups, but because it would be a really interesting experiment to see just how many people line up to get one. there's an obviously high demand for a design like yours, but you'll have to rely on word of mouth alone in order to supply it, so there's no telling what will happen. if your pickup sounds the way you say it does, i think it'll catch on pretty well. incidentally, just how many of these do you think you'd be comfortably able to produce for the time being?