id charge around 7k for a chain job (parts and labour) if its through warranty goodwill or full out warranty as id claim for everything I can feasibly claim for.(valves and cams are a 5k bill when you factor in all the bits that go with them)
then you've sublets for getting the head skimmed and new gaskets(then I also charge for every gasket that goes on the head aswell)...these chains are putting the kids through college

an over the counter chain is around 2-3k