LOL!! Bubba, you are totally losing me here.
First, Premier, the vendor you bought your UD60 from was willing to send you a BRAND NEW and COMPLETE HOUSING for a u-joint that you broke. Who do you think that housing comes from?
Second, you're assuming everyone and their mother is going to be breaking u-joints like you did. Based on what I've personally experienced and seen on other JL's and JT's running UD60's on obstacles that should be breaking everything, I find that very hard to believe. AND EVEN IF this were to be the case, I would say that you should start recommending RCV's or other shafts that are stronger than the standard ones that come on UD60s to your customers. To this day, I would NEVER recommend a set of standard Dynatrac shafts with any of their axles as I have seen them break. What I would expect you to do as a shop is to help your customers buy parts that will make their Jeeps better - as in, Jeeps don't even come perfect from the factory. If you want to talk about poor customer service, try getting FCA to warranty anything. Does that mean we shouldn't recommend people buy Jeeps?
Third, I fail to see why you'd need to replace the entire assembly. Simply pull the shaft from the crate axle, install it on your existing housing and call it a day. Based on what you said you could do it in, it should only take 45 mins to do and without the need of a lift.
I hope you don't misunderstand what I'm saying here and realize that I'm just trying to put some perspective on things.