Assuming that you force 4 melds with determination, you can trump anything with a crafted item. Jewelry definitely takes peacock ore. Also, dont forget, aqueous whetstones are used to make astrolabe, a blm staff, which I have yet to see on Ultros (not on auction house, and havent personally seen anyone using it).
Hmm I'm not so sure about this....mainly because I haven't been looking at the Vanya stuff! There are certain BiS slots that require Vanya over Allagan and AF2. You'll find it's generally pieces where you can put a lot of crit into them where their Allagan or AF2 counterparts do not. For instance, I think our AF2 legs fall in this category.
Probably 350k for materials to craft assuming 10 items of 35k or 125 tomestones each (we are assuming that they are buying)
Then need a lvl 50 crafter with HQ slotted gear and a control high enough to make 2 star (this cost a ton of cash to do on my gsm)
Then need to buy III and IV materia (good III materia is 30-70k on Ultros, while good IV materia is 150k+)
Get to gathering...
I was a little sloppy with my earring and generous to the crafter (who is my friend) when he did it for me. I spent around 600k because I hadn't farmed all of the peacock ores up at the time. The materia alone was at least 200k and, as you can see, I'm not even using the best materia I could be. You should always slot your first meld with materia IV.
Right now, you should see a decrease in 125 tome item cost and a huge increase in materia cost. It's a lot harder to be self-sufficient with materia than it is with crafting, IMO. And, if you want HQ on your high end gear, you're going to have to level multiple crafts to have a near 100% chance.
Yoshi said that only 100 people would be able to clear Bahamut before the end of Beta IV. So no one has cleared it at all?
One group cleared turn 5 using an exploit. This, of course, didn't count and they were rolled back. No one has been able to legitimately do it.
If you are planning to PUG coil, until gear becomes more readily available faster (hinthint: AF2), I think turn 2 ADS is going to be a huge road block for many PUGs if not Caudecus. Currently, turn 4 is giving even high end shells a difficult time.