I have a set of Sunfish booms with all hardware for $75 and a mast for $65 but I am in upstate NY near Syracuse. If you have a way to pick them up, I am happy to sell them to you, but you are correct that shipping is prohibitively expensive.
I can provide the name of an independent shipper that might be reasonable. He transported a Sunfish I sold from RI to NY at a very reasonable rate. He tries to add items along his route to make the prices cheaper. I can provide his contact information if interested.
Are you still Looking? I have a set of spars that I am asking $125. They are located in Rodanthe NC but could probably arrange for delivery if you are not in a hurry.
They are far from new but are seviceable.