My two cents of humor
Polite way of putting it: While we appreciate your generosity in sharing your finds with the world Bill, most of us are aware of the Craigslist ads in our local area and some of us may already be players.
= Sarcasm, I really don't like when people do this
because now we are not the only "players" aka "buyers" thus creating a capitalist supply and demand issue. Then causing a chain of events possibly causing a bidding war or higher price. So please don't post so others in the country can see. That way people locally can buy them way below their actual value.
Hmmm I think I nailed it.