Looks like a typical well thought out Lee product. Not always the highest quality, but their stuff just seems to work.
Only thing I don't get is how the "auto prime" or this priming system is simpler/better than just priming on the Lee press? I bought an autoprime from a guy just to see what I was missing, and I find that priming on the press is just easier for me.
I think that some people had issues with the feed slide on the Autoprime. The primers had to be helped along quite often. i used a pencil to push them toward the shell holder. This seemed to be a problem when there weren't too many primers left in the tray/feed slide.
This updated method eliminates the problem of having that 2 or 3 inches of slide from the tray to the shell holder.