Word must be getting out.
I picked up one of those in kit form about a week or two ago. Most of it is SMD (comes pre-soldered) so there's not much left to solder really. Took about a half-hour to finish it up. The kit is even cheaper at about $35 US.
Link to the kit.I was surprised at how well it worked. No, it's not as nice or accurate as a "real" oscilloscope, but I expected the refresh rate to be pretty chunky and to be able to handle only relatively slow frequencies. However, it's really pretty good. They sure are portable enough - now it's a quick & easy matter to take it to the machine to check for signals here & there rather than figuring out a global strategy just to get the scope and machine close together enough for the leads to reach.
I also have some learning to do. I've used a scope maybe a half-dozen times in my life, and three of those was about two months ago to read a radio control signal in a project I was working on - had help from my local guru on that one too.