I would try and diagnose what's there. Make SURE it is a carburetor problem. If it is, try and repair it. Those carburetors are VERY easy to build. If you go through this hobby throwing money at everything and simply replacing it, you won't learn very much. If you fix it yourself, you will have taught yourself how to fish. Learning is irreplaceable.
..and I did go back and "reread" like you said. Nowhere before your last post did you mention engine size.