THIS NAR report:
http://www.realtor.org/press_room/news_releases/2006/ehs_oct06_existing_home_sales_stabilizing.html
shows a median existing home price of $221,000 and an existing median existing condo price of $214,300, each at the end of October, 2006.
If you accept those prices as the "starting points" to be compared with analogous prices at the end of March 2007, we have a "deal".
I say we get our prices here. It contains links for SFHs and Condos. Like I said, if they are both up, you win. If they are both down, I win. If they are mixed, it's a draw. Are you game? Here's the link:
http://www.realtor.org/Research.nsf/Pages/MetroPrice