2003 Honda Civic head-gasket replacement

If you’re heading down the path of debating the parts prices with the mechanic based on prices you find online, you’re heading down a path that I do not recommend. Let the mechanic be responsible for the entire job, including ordering the parts through his normal channels and getting his usual markup for the administration and handling of same. Expect the man to stand behind his work, but also let him make a fair profit. Do you really want to nickel & dime the guy who’s going to tear your engine open?