They are all bought out. Prices are already rising to $15-$20 for mediocre NNNNN.com's on snapnames, and these are hard to buy on the aftermarket because there are so few of them (only 100,000 total compared to over 450,000 LLLL.com's). Plus, Marchex owns a huge number of them as US zip code websites and is not letting go of any. Demand for numerics in Asian markets is also driving the scarcity and value of these domains, 173.com just went for over $300k and two NNNNN.com's are in the top 100 Chinese Alexa rankings. So even a "random number" has many potential sources of value (Asian market, foreign zip codes, words spelled on cell phones, part numbers, etc.).