I'd be drowning in oil if I did not give it to friends and family. I have to trim the odd oils from the stash so I can use the same brand oils for my cars regularly. I also have the 80G of Delo 30, well, 30G. It works great and costs me $1/g. I really only collect unusual oils to stash myself, like 20 weights, GC, Saab oil, M1 0w-30 SL that has been sitting here forever.
The young kids in the family get some decent oil out of me free. I admit that I'm trying to get them "into it" and still the rule applys that they get oddball oils, like Havoline Semi-syn, and RP. I just can't bring myself to charge them for it. I remember my older relatives helped me once or twice on my cars and I really appreciated it.