Re-Core here in Los Angeles are $450-500 with high density core for 22” A-body Radiator

Of course you are supplying tanks and side supports. What ever dent/twist/pit condition they start with is what you end up with. They don’t do bodywork to your parts. But you can ask them to unsolder it all and you spend your own time fixing them.

Price of brass and copper have increase dramatically in last 10-15 years and production volume of brass cores has decreased even greater.