Originally Posted by
Muzzleloader
You do need to take into account on the return SoT/ironite you get as rewards. If they reduced the cost, but also reduced the rewards we would be no better off in the long run. I ran one key of level XII LoL. It cost 8 refills. That would be 48 runs at 20 SoT per run. I had 68 runs not including one at level XIII along with 80 ironite back. That comes out to about 10 SoT per run.
Running Level XII equaled in cost comparable to level X. That doesnt take into account the different rewards. It's hard to compare rewards, that really depends on what you currently need. I have only run 5 LoL keys, but the results have been comparable in average per key used.