Ya sometimes it is hard to get rid of roosters. I only hatch breeds like silkies that I know will have friendly roosters so I have a better chance of getting rid of them. I would never sell someone a mean rooster though. If you do want to make sure they turn out friendly you have to spend a lot...
I always sell all my roosters because I could never kill them. I have 2 silkie roosters that get along really well with my 3 silkie hens and 4 isa brown layers. They keep the peace in the coop between the layers and the smaller silkie hens and get along so good. You can always post your extra...