Definitely look around. Some places are getting the carbon shafts from the manufacturer and just upping the price. I'd go direct and get the best cost possible. Then if you have any issues, you can deal directly with the factory and not a 3rd party.
And yes, as mentioned by others here, you can rebuild the stock unit with a new carrier bushing or even buy ready-to-go rebuilt units or even new 'same-as-stock' units.