200$ budget not going to get you much.. i have one.. no history.. do not like how it looks to have had a valve seat installed.. so 125$ shipped.. came w/car i got.. in tub in back... i just do not trust it as someone changed a valve seat at 1 point.. ive seen stuff like that fail.. so do not trust for myself.. but it looks crack free and ll besides that.. just you gotta trust a machine shop did it right.. i dont..
If you have more time than money, you can flatten the head gasket surface by lapping the head with lubricated 100 grit sandpaper on something hard and flat (e.g. polished granite). That's easier on the pre-chamber inserts than running a cutter across them and will leave them a little proud due to their harder material which is what you want. I've used sandpaper for a hardwood floor sander. Pieces as large as the head should be available at any tool rental place that rents drum sanders.