As a retired officer and former real estate agent and owner of rentals, let me start by saying BUYER BEWARE and IF IT SEEMS TOO GOOD TO BE TRUE IT PROBABLY IS A SCAM.
Your question is too broad to answer easily, even though there are GOOD values in just about all locations.
FIRST, do your due diligence research on MLS (multiple listing), looking for SIMILAR SQUARE FOOTAGE, AGE, CONDITION AND NEIGHBOOD. I like to look over the place using ZILLOW.COM and 2010 GOOGLEearth.COM as well as the MLS listing for lthe zip code(s) I am interested in. Checking the comparables will help, but watch the DATE OF LAST SALE compared to the prices you see. 6 months can make a HUGE difference in some neighborhoods, and last year versus this Spring are often off by 20% or more. Hate to discourage you, but many places are still seeing FALLING PRICES.
SECOND, get a BUYER'S AGENT, like Dan Melson (check his website for hints, danmelson.com) since an honest agent is worth his weight in silver-plate, if not gold.
THIRD,and maybe most important, RENT if you can for a few months to get a feel for the ENTIRE AREA within which you can COMMUTE and FEEL COMFORTABLE. Nothing works better than being there first.
Best of luck. Be wise and be wary. Most agents are too hungry and pushy (sorry, folks, the truth shalll set you free). Love the agent you are with or move on. Sign only SHORT TERM CONTRACTS with agents for your own safety . . . and NOTHING OPEN-ENDED . . . good hunting. It can be much fun.!