Arcane crystals have become dirt cheap after the crash of the thorium bandwagon. Coupled with low priced thorium ore/bars the Arcanite Bars are very profitable. I had been selling Arcanite Bars for 75g each for over a month before someone else caught on and has been posting at 15g per bar, and still turning a big profit. Transmute Spec Alchemy makes even more cash off this simple item. Lots of people are levelling new tradeskills is why they sell.