I have a pretty efficient shop for a solo maker and I take advantage of technology to make things even more streamlined. I have a very nice drilling machine for cutting bores very quickly and I have a CNC mill to act as a robot apprentice. This type of thing will help speed up some of the "grunt" work of flute making, but not by a ton. It's primary function is to spare the flute makers bodyfarmerjones wrote: If no one is making these flutes in mass, the price is going to be very high.
Even with some high-tech gadgetry, there are aspects of making these flutes that you simply can't do quickly or in a "mass" approach. Cutting tenons and sockets to the right size and threading or corking them is a delicate business and is only going to go so quickly, even if the flutes are rolling down an assembly line.
Cutting the embouchure hole, tweaking it, and then drilling finger holes and tuning the flute is a very time consuming operation. It is done by hand (and these days I need a bright light and some magnification to see ) and there is no amount of technology or a human workforce that is going to speed it up.
I've seen those ebay flutes as well, looking just like a far more expensive flute but only costing a couple of hundred dollars. The only way for that to be profitable to anyone is by either cutting corners or by using slave labor (and unusually skilled slave labor at that).