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OP since nobody else mentioned it and you might not know their are certain crafting passives you must have in order to get the chance of getting high end tempers/resins etc such as alloys and dreugh wax. I made the mistake of not knowing this early on and wasted a few stacks of raw topgrain with nothing in said perks (unravveling for clothing line) not knowing it was required to get best resins etc
EDIT: Im on Xbox one, so I cant speak for PS4 but I see rubedite ores going for 10k+ a stack, The v15-16 clothing mats go for about 5-7k a stack (not raw materials). I havent ever looked for raw end level mats and cant find any in multiple guild traders atm but their are a few stacks of various level raw materials for 5,200-6k a stack. They are also selling for that in my guild sales history on xbox one NA.
On PS4 the Rubite, Ancestor, and Ruby Ash have hit all-time lows. You can get a stack of Rubidite for around 4k, Ancestor and Rubido go for around 10k and Ruby Ash I saw some going for like 2500g per stack. I have bought a lot of all four recently with the expectation that they will go up as well.