Pricing this type of work involves a few things. What caused it and needs to be fixed, not as simple as just replacing the gasket. Parts what needed to replace and also whats worth while doing while in that far, maybe waterpump, chain and guides etc. Then there is any machine shop work eg skimming the head etc and then lastly labour. Word to the wise stay away from dealer unless the stamp in the book makes it worth it for you. Parts and labour buy right by once buy wrong buy twice