I don't but there's a place close that has small animal/poultry actions one a month so they get sold easily.
I honestly don't see how anyone can get stuck with cockerels/roosters if they didn't want. Too many people like to eat chicken.
Now if you're dead set on "I don't want them eaten" you're gonna have a hard time. If you expect to sell them for what some expect they're worth after getting attached to them. You're probably gonna have problems. I often see roosters on CL here for common breeds prices at $30 bucks. Not gonna happen. If you're in the suburbs where people don't know how or won't process a bird it might be a bit harder but someone will drive in if the price is right, free and/or especially if you have a few that need to go.