So, remember how I said I found one of these adjustable cycling bike bicycle cycles for sale on Craigslist? Well, of course I had to go try to haggle for it. The guy wanted $50 for it but I told him $25 or nothing. He said $30 was his lowest he could go, and I said goodbye.
A hour later $25 seemed more appealing to him, so now I’m the proud owner of a bonafide adjustable cycling bike bicycle cycle. 
This is obviously the very same unicycle-shaped-object as featured in the eBay post I linked, right down to the bizarre and awesome yellow/green tire. Looks like I just saved myself $419.90. 
I was quite surprised when I rode it from my car to my office door this morning without dying. I even idled on it and the cranks didn’t snap in half.
Later tonight I’m going to take it apart and really document everything that goes into one of these babies, and then write up a review on them. Obviously people are buying them, so it might be a good idea to dissect one and see exactly what you’re getting for $50 on eBay/AliExpress/Amazon.