Yeah the only reason I am going beyond just getting BHE is I have ironite (started with 3666) and I am getting a good portion of that back each mega refill - nowhere near 100% but maybe 66-75% but it varies - I had six battles where I got 10 ironite on the trot and then nothing for 10 battles. Not paying for itself but costs are lower than I feared - also got 14 catalyst souls too which are handy to have. Not looked at talisman as got loads of primordial.
I reckon it has cost around 1,400 ironite to get BHE (well 27 k frags) ..... as I got 200 ironite for PVP and also some I guess from daily quests and sitting on 2,414 at the moment. I have been doing everything through this dungeon including my troopers though some used for quests each day.
I can live with that and what it will cost to get my T3 and three pyramids and maybe a few extra Cyborgs for the sac.