Santa Fe's real estate market has traditionally held its own, and I don't see that changing anytime soon. Within the city, there are some inherent (and some not so inherent) checks on developers, which have prevented a real estate bubble market from occuring.
Does that mean that the prices are sane or that you can't get much more home for you money elsewhere? I guess it all depends on where "elsewhere" is.
Check out
www.sfar.com, go to "MLS Info" and click on "MLS Stats."
I'm always hoping that some "rationality' will return to the housing prices here, but I'm not going to hold my breath. That said, if you pay $500k for a home, and it appraises, you generally don't have to worry about it losing its value. You won't make $1M selling it two years later, and the best I can tell, Santa Fe really isn't the market for fix-and-flips.