Yes, we know that the picture above is sideways. It fits better on the page that way, and that's usually the position you'll see it in when we're attempting to ride it (or at least that goes for the guy typing this).
Unicycles have kind of come back into vogue in the last few years, and we're trying to keep a few styles in stock but we ran out for a little bit. We've had a recent shipment of them come in though, so we now have the 20" model you see here for $150, and a 26" model for a bit more.
We can't think of a better New Year's resolution than to learn how to ride one of these things. It's certainly a better resolution than giving up chocolate. If you ride one of these you can probably eat more chocolate guilt free.