You get one fabric the first time around.
If you select to do it for the money, you can use that to see baium. Then when you talk to the NPC again after that you get 10 more fabrics that you blody by killing angels.
You can either turn those in for a B grade weapon part (I got AOBA head) or use them to port to baium 10 times.
If you start using up the parts, DON'T talk to the quest NPC again, as you will get the quest cancelled and the parts stolen :mad: