I know a lot of people are going to chime in with RNG this, RNG that, but hear me out. Something happened/changed with the patch that borked the drops on this. I craft and supply high end enhancements and I run missions with my npcs constantly and consistently. Up until this last patch I have always been able to maintain a steady supply...I use to get a few every now and then running missions, it was always just enough
However now as I have not got one in any missions I can normally do, I have had to purchase missions from the market, which they do drop. I have seen the prices climb at a really consistent 10k a pop to 30-90k for a single crystal and the amount of high end enhancements drop from about 15-20 on the market to 4-6 at a time, since this last patch
I reached out to a few other crafter friends and they have seen there supply of crystals bottom out and gave up on crafting enhancements all together (pretty much the only thing us artificers have going for us as hilts you can get easy from doing dailies, crystals are soo hit and miss.