The St Petersburg Times reports from Florida. “What happens when big spenders with disposable income neither spend nor dispose? The area’s high-end real estate market is finding out. Sales of million-dollar-plus homes in Hillsborough and Pinellas counties plunged 42 percent from 2006 to 2008, from 554 to 321. This year, million-dollar transactions are even harder to find. Some luxury builders who specialize in the million-dollar-plus market report peak-to-valley sales declines of 80 percent. U