Editing A Business Economics View on EL (section)

=== Magic XP ===
Using the good old shield spell:
 Mana cost     8,25 gc (assuming that the [[cooldown]] duration is used for something else)
 Ingredients   7    gc
 Time cost     0,25 sec
 
 Total cost   15,5  gc
 Base XP      40    XP
 XP/gc         2,6
or, as a better alternative, Life Drain (the time investment ist greater here because you must aim at your victim each time)
 Mana cost     15 gc (assuming that the cooldown duration is used for something else)
 Ingredients   15 gc
 Time cost      5 sec
 
 Total cost    35 gc
 Base XP      120 XP
 XP/gc         3,4
For both calculations I did not account for the time lost due to SR cooldown since I assumed this time is productively used for something (eg. harving or fighting)