I have polished stainless Borgeson u-joints on my truck, they are pricey but very nice. As far as cheap goes, they are the only thing that connects your front wheels to the steering column so I wouldn't go to cheap. To the guy that wanted to know the reason they cost so much, there is a ton of machining on them.
From Borgesons
website:Borgeson needle bearing universal joints are machined in our factory on state of the art CNC equipment from steel, stainless steel, or aluminum. On-going engineering and testing ensures that we offer the strongest, safest and smoothest operating steering universal joint available today. Borgeson needle bearing universal joints have the distinct advantage of lasting nearly 10 times longer than non-needle bearing joints. We recommend only needle bearing universal joints for vehicles that are used on the street. Borgeson needle bearing universal joints have no backlash or radial play. They are permanently lubricated and sealed and require no maintenance. Borgeson single universal joints will operate smoothly at angles up to 35