Heh, my returns are all over the place. Average? I dunno, maybe 50%. I figured a few months ago that my avatar is worth less than half of what I have deposited overall, but that is not entirely due to bad returns
It doesn't bother me and I'm not complaining here, but in figuring returns, that's probably a pretty decent indicator of an average.
Some days I can go out with my soc mates on a large soc hunt and we burn over 500ped ammo each, with decent eco gear, and spam a ton a globals but all end up with about a 30% return in the end. Other days it's the same scenario with no globals and a profit for all in the end, other days we have a nice lucky HoF or 2 and profit.
I do notice though that uneco hunts always yeild a less than 20% return for me; teamed, solo, whatever; doesn't matter, unless I get extremely lucky and land a HoF. By uneco I mean using weapons/armor/faps that aren't the greatest for my skill level or aren't suited for the mob I'm hunting. (You don't need an LR48 to kill exo youngs, and using a korssH400 and emt2600 with ghost armor & 5b plates to solo hogs is a bit of a waste too
but it's fun!)
For my "normal" eco solo hunts (hunting at my skill level with appropriate armor/weapons for the mob,) it's probably approx. 50% overall return, maybe a little bit higher. There are the streaks of 10% returns on occasion, and streaks of 80% return with the odd profit thrown in.
Same goes for crafting & mining runs too most of the time.
I'm certain that there are probably ways to profit all of the time, I don't doubt those who say that they do; I can even manage to stretch a PED when I need to, but, whenever I can I usually prefer to just go out and mindlessly kill stuff...it's more fun that way.