Jul 28, 2009 鈥 By WSU News Services 鈥 Average home prices in the United States are now stabilizing after more than two years of decline, which means buyers can lock in a good deal before prices rise significantly. Last week, the Federal Housing Finance Agency reported that prices increased 1 percent between April and May. On Tuesday, the more widely watched S&P/Case-Shiller index confirmed it, posting the first rise in its 20-city sur