I hide the vast majority of my collection at least partially because some people are relentless about certain games.
I have no problem with people reaching out and I often do it myself if ever on the hunt for a game.

That said, when cold calling you need to at least be reasonable in your offer.

I have actually both bought and sold from cold calls.
Worked out well in many cases.

Centaur was for a long time the most asked about; so i removed from my active collection.
Whatever rare or oddball game currently catches my fancy is what I will go hunt and call about.