Craft R items still worth¿

I just reached level 85 with my toon, and i realising that R grade items (at least immortal/twilight sets and requiem/apocalypse weapons) does not worth, to get 1 recipe kill 10k mobs or 35 teredors... also same to get key and materials.. and u can buy in auction for 80kk 1 R set.



I am missing something maybe?