Maybe it's the influx of billionaires selling $100 million compounds, or maybe it's just a real estate market on the rebound after 2008, but affordable housing is hard to come by in Aspen, Colorado. In the latest in a series of articles called, "Worth the Cost?", the Aspen Daily News examines the difficulties in finding reasonable housing in the Roaring Fork Valley. So just how hard is it to rent one of Aspen's high-demand affordable units?