The amazon/ebay carb kits work pretty well and usually include gaskets, fuel and primer lines, a new fuel filter, air filter and primer.
They last 1 or 2 seasons before the alcohol in most gas will make the diaphram in carb or fuel lines go south.
If you run the premix that you can buy in quarts and gallons at box stores, they last a long time.
The carb kit with extra parts is usually cheaper than just a carb rebuild kit and you don't have to worry about the tiny passages being stopped up on a rebuild.
Another option is to mix your own with ethanol free. That what I do. I have a designated one gallon container for pre mix. If you rebuild or replace carb make sure to use ethanol resistant lines. My local True Value has them in various sizes.