It is true that investors pick up deals early. They are many times buying the homes in bulk from the banks so that the banks can liquidate there money in a more timely manner than putting the houses on the market. However in this market we will most likely not see the prices dip to as low as 50% less than their peak prices because this foreclosure market is unique. Many of the people who are being foreclosed on are already looking to buy again. It isn't that they couldn't afford a home, it's just that they couldn't afford the home that they were in when their rate adjusted.
See this interesting article from today's Wall Street Journal:
http://online.wsj.com/article/SB121003604494869449.html - Wed May 7 2008, 14:24