Keep your eye on Houston Texas Craigslist.  They have been having some 300s 400s and a couple 500s on lately.. It looked like a rental company upgrading there inventory..  If I remember right they were from $4k to $6k

The machines looked in good shape..

  RC

Here is one in Austin Texas

http://austin.craigslist.org/tls/2539400202.html

Here is one in Houston Texas

http://houston.craigslist.org/tls/2605315274.html