I bought one of these at the end of summer. I am a natural born procrastinator who specializes in getting things half done and then letting them sit in their incomplete state for weeks, months, or years - so when I got this, I decided to assemble it all in one fell swoop. It was really easy for me to assemble... time consuming, but easy. If you own a thimble, you're golden because my thumbs were all jacked up from pressing the pins into the hole, but other than that and the time it took, the assembly couldn't be easier.
So far, I haven't seen any decomposition, but that may be due to the cold weather. It spun like a charm when it was empty, but now that it's full, it's a real pain. I can get it to spin by putting my fingers into the holes and pulling, but it always seems to spin back to its former position. I don't know what's up with that, other than to hypothesize that the tubes on the inside cause the material to stay in one place and create an imbalanced sphere.
Costco had similar yet smaller spherical composters for as low as $49 a few months ago. It was too late for me, as I had already purchased and assembled this e-composter, but I certainly would have been interested in what Costco was selling had I not.