You are absolutely right guys, I know that.
Some of you built also a franken and start e.g. with a Phong case set (which is alone over 1k), then month for month there were upgrades with gen parts. At end you have a complete gen watch except the case. But you don't really want to know how much you paid for it, nor you have the feeling it's paid over 4,5k and even more!
This package is IMO cheap for someone who has a 1570 laying around (which of course was also not for free, I guess!), and it's still cheap. Also I hope it's for wearing the watch and not for resale.
And why it should be a gen bezel assambly? A yuki or ND would also work fine...
Also you have to be very carefully when you buy cheap "gen" vintage watches. Most of them are anyway franken, unfortunately!