The Austonian is going to be nice. At 56-stories, it will be the tallest building in Austin. In fact, it would be the tallest residential building in San Francisco. It has a beautiful pool and a dog park with a special doggie toilet.These luxury features, however, are not free. Units in the Austonian start at $500K and top out at more than $7 million -- more than the selling price of almost any apartment or single family home in the history of Austin. On top of this . . .