Change cylinder head gasket/head tarpaulins, how much?

Hello I wanted to ask, what does it cost me if I have the cylinder head planned? asked once, should it cost around 60€ is that ok? Besides, I wanted to know if it is time-consuming to change the cylinder head seal with you? Normally it should not be a problem because the seal is sitting right under the cylinder head or is I wrong? If the head is already down, it is recommended to regrind the valves immediately with? The clutch should also be made, it pulls and the return warehouse is broken shortly before! How much euro are we talking about here? Just look away from the material, WITHOUT working hours! Thanks already