On my server, the mats for Vanya run for 30-35k a piece, 9 of them is 270-300k. Having multiple crafts at lvl 50 makes Vanya + 1 easily crafted. To get the materia, spirit bond lvl 55 gear and convert it. Sell it or use it and you've made your own Vanya for 350k. It's significantly better than DL with materia attached and it makes you different than everyone else. You can also sell it back for waay more than what you spent crafting it when you get Allagan or Myth gear. Then you can get multiple relics with the tomes you saved too. It's a very logical investment to make.
I lvled BSM from 24 to 40 yesterday and will get 50 today to be able to HQ vanya silk without failure.