costs money to employ skilled labor
when the labors cheap and the products cheaper, you get monkey bidness like this sent to customers
i've seen some of those trial and error UCA's first hand be off at the bushings by a matter of 1 1/2 inches and when they were sent back to the company, a few months later the same set of uca's were sent back that had been heated and bent and when pulled the balljoint we didnt even need to xray the uca you could see the stress cracks from two feet away
both of mine survived hitting a horse that was dead in the road at 50mph and destroying 2 teraflex bumpstops wrecking 2 of my shocks, it probably should have wrecked the uni but i got lucky. part of the value of anything is the sleeping good at night knowing you dont have to worry about whatever it is. and everytime i got in my Jeep before it was even lifted i didnt trust the uca's. I'd seen enough of them pop on the highway, libertys and otherwise. just make sure ya do the research into whatever it is that you thinks a better value, they might replace the uca's if a weld breaks but they wont be paying for the other doodads