I bought a unit a while back.. had some good antiques, paintings, furniture ..etc. Then there were boxes of family photos, an urn with ashes, a cat urn with ashes, wedding dress, baby pictures ... the whole life locker.
I tried to give it all back to the facility manager, they didn't want it, I tracked the person down on facebook, no response, found their email in the unit, no response.
That was a tough one but it all went into the dumpster.
They just didn't care so why should I.
Any time that I find those kind of items I try to give it back and reach out to the people. I would always rather give it back then dump it.
As for buying the units its the same thing. When I pay for the unit I always tell the manager I'm going to wait 1-2 days to empty it out. If the person calls looking to buy the unit back I'll sell it no problem. Once I get it to the shop they'll only be able to buy back items individually and if its past a week consider it gone.
I had one where the facility manager called me 2 months later and said the guy was looking for his grandmothers urn. I told her it went into the garbage and the guy flipped out and called the police on her ... thankfully she didn't give me up... he said that because his grandmother was in there he thought he could pay 2 months late ... lunatic.