Got lvl 50 recipes open while back and I am honestly shocked how useless it is.
To craft lvl 50 green gear, Darksteel that has item level 70 you need to make Darksteel ingots. Well that is not bad at all but those ingots happen to need 9x regeant called "Coke" that costs 125 each.
So you can buy item level 70 Darklight gloves with 475(?) tomestones, but if you want to craft Darksteel gloves that require 2 ingots you will need 2250 tomestones.
Every other Darksteel piece requires 1 ingot, so those cost "only" 1125 marks. That is more expensive than any item level 70 piece.
Only exception is if you get heavy armor for tanking, that is actually cheaper as those head+body combos cost something like 1400+, IF I remember it correctly. Didn't bother to check as I am so disappointed because I wasted time on leveling Mining to 50 and Armorsmiting to 45 and now I have no need for it.
I am under assumption that those ingots required 2x Coke in 1.0. So why is it so expensive now?