Wow, so I actually bought one! While considering that Uscooter Eco, I ran across their more powerful Uscooter Booster on ebay for about the same price. I contacted the company and they offered to discount a brand new Booster in the color I wanted to $739, shipped. Big, big purchase for me...! I thought about it for a couple of days and just pulled the trigger today.
I feel kind of deserving of a facepunch for dropping so much cash on a single purchase, especially when it is about one week's wages for me. But if I make good use of it, I think it will pay for itself. Even though it is not a bike, it would be more active and less cushy than driving a car for short distances and could help me squeeze some more life out of my 14 year old car. The thought of being able to avoid parking garages downtown alone is quite thrilling to me.