Rock Auto sells bare heads made by ITM, they are about $260. They are supposedly OK. But do you really want to put a bunch of old parts into the new casting? If you add new parts plus machine work it ends up being a pretty expensive job.

Rock Auto also sells "reconditioned" heads with "new parts" for about $450, but it is hard to know how good they are. "New" heads with complete valve trains are common on Ebay, but few seem willing to trust an assembled head. Almost anything will last a year or two.