We now charge a minimum of £50 for castrated males as well. By the time you add up how much it costs, stud fee for the mum, disbudding fees, any vet fee's if the kidding was bad, worming the boys before they leave, eartags..... It all adds up, and if were taking our kids to a vet to be disbudded (my mum is a qualified vet so we do it ourselves) it would probably cost more than £50.
It is a bit late for this year- you need to ask around February/March time so people can bear it in mind when kidding happens.
Beth