How much does it cost to replace a cylinder head on a '99 chevy camaro?

It's a V6. I thought it'll be much cheaper than repairing a broken head gasket?

I'm actually buying this car from someone and he mentioned the repair costs are only $200, which I'm very suspicious of. He said the headgaskets aren't broken and that the car was drivable, just that on the 'cylinder head' a bolt was broken. Is a 'cylinder head' different from a 'headgasket' and what's the difference in costs for replacing the 'cylinder head'?

Headgasket (2X) is between the block and cylinder head. If a head bolt broke, you would most likely have to remove the head... Make him show you the broken bolt by removing the valve cover.

How much would it cost to repair that then?