I only have a single 50% bonus unit of my own, and there's always at least a 75% bonus friend to take, so on average I get ~450-500 per ELT run.
I'm almost done with the event though, and probably won't farm anymore once the new content comes out tommorow. I picked up the first moogle, unusual artifact, survival dagger, the screamroot, all of the tickets, and have around 20,000 remaining to spend on 6* materials and cactuars. I have a big surplus of 6* mats, and already have about 140 cactuars clogging up my inventory with no one to level, so either I buy more slots to store them, or just skip the cactuars entirely.
Notable things I'm skipping are:
the gun (it sucks, and I have like 10 mustadio's waiting)
the consumables (I have 150+ elixirs/phoenix and more every day from arena)
the megacite (all of my espers are maxed, with enough reserve to max the next 3 released)
the quartz (have ~400, with more per day from arena)
the magic materia (too small of an impact, and it's far from BIS if I ever gear a mage anyway)
and the evasion materia (I may change my mind on this one.... we'll see)