There's a place called Auction House which readily sells Temporal Crystals and Fractured Temporal Crystals. Very often CHEAPER than the dust equivalent of work orders! My enchanter reached 700 skill points about 5 days ago - buying 4 crystals for 2000-2400 then selling enchant for 2900-6800 (yes sold one for 6800!). At least 500 gold profit on each enchant scroll. When you hit 700 you can make 3 crystals right off the bat as well.