Just no. I think they must decide if they are an individual user or if they are a steroid dealer.This is a situation that doesn't come up often, but to be clear are you saying that a trading and barter forum is out, which I can understand, or it is forbidden for members other than sources to mention they might have extra gear that they don't need.
Too many red flags when new members do this because it's a convenient way to escape public accountability and scrutiny that is a rite of passage for other sources.
There have been instances of sources/dealers masquerading as individuals trying to get rid of extras who fly under the radar sourcing via PM.
It doesn't help the community to blur the distinction between members and sources.

