carburetor for 1978

I have 1978 Chysler New Yorker which has been stored for awhile. 400 engine. The gas tank has been replaced and fuel filter. The carburetor seems not to function right. Are the rebuilt carburetors on ebay any good or is it better to buy a new carburetor? Or rebuid what I have. I see rebuild adverised on ebay for 229.
Author: Fred A