I'm on the last chapter in the game, have maxxed my salvage rank and dev level for every city (except one). I can't seem to find a place to buy premium cylinders. I've heard that they can be bought before the last chapter and not at an A rank salvager too. It seems the common denominator is that you stop being able to buy them at some point, but I can't confirm that since I've never been able to.
How do you buy premium cylinders?
4 Answers
According to this thread, premium cylinders may randomly appear once you visit cylinder shop (long rest may be required).
Update:
I've actually got them by myself. Same as in thread above - just long-rest in Torigoth until you get them in cylinder shop. Seems to be completely random - previous time I haven't got them for 1 hour of long resting, and now I did less than 10 times to get this. Screen as proof:
It looks like the Expansion Pass adds a way to craft them.
First, you have to do the "M.I.A. Nopon" quest which starts in Uraya.
Next, bring 4 Gold Cylinders, 2 Silver Cylinders, and a Chain of Keys (salvaged in Gormott) to Budada in Goldmouth (on the flight deck level).
I've beaten the game, maxed all development levels, and gotten my salvager rank to A, and now they appear at every shop all the time. When I was at salvager rank B, I never saw a single shop with them.
2From what I heard there is a NPC somewhere that tells you that they are very rare and barely ever sold so I suggest just fast travel to different titans and check the stores there and you might be able to find some
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