I am going to build my UDS the weekend after the Superbowl, I think.
Honestly, I think the "building it myself" part will be a bit part of the fun of having one and I am not particularly handy. Would I consider paying for one instead of building it if the price were right? Sure, but it really would have to be fairly cheap. I suppose, hypothetically, I could see paying in the $100-$150 range for one, despite the fact that I am pretty sure building it myself will run me far less than that (and this includes buying a certified refurbished SS drum -- I could lower my costs even more by buying elsewhere and doing a series of burnouts).
22" OTG; 22" Performer; mini-WSM; Brinkmann gasser; UDS (on the way); Maverick ET-732