Parts are expensive, check with NAPA, CarQuest, some others still have new parts available, and much cheaper than the specialty parts suppliers.

I had the head reworked, new cam bearings installed and the cylinders honed by the machine shop on my 228. I did not have to have any cylinders bored, no crankshaft turning, used the old pistons and I disassembled everything, cleaned everything and reassembled the engine myself and still had well over $1000 dollars in the rebuild. I'm guessing if you have the engine guy do a complete rebuild, his estimate is not too far off.