The September MLS statistics on sales of existing single family homes are out and the news is about as good as can be expected. During the month, sales of existing homes fell by 8 percent while the median price stayed flat. Notably, prices are actually up approximately 10% from September of 2006. While the rest of the country struggles with massive price erosion, the Austin market continues to hold its ground.The news, in general, was stronger in some of the more central areas and weakest in the more distant high-dollar suburbs. In Area 1B, just west of downtown . . .