Ryan - I've been keeping my eyes open for a PD170 as well and the best deals I've seen come through have been on ebay. Occassionally you'll pick up a post on a forum somewhere of somebody selling one, but that's pretty far and few between. Ebay is probably your surest bet if you're looking for one now.

http://photography.search.ebay.com/pd170_Camcorders_W0QQ_trksidZm37QQcatrefZC12QQfrom ZR40QQsacatZ23781

Although a quick web search came up with this as well. Looks like a good deal to me.

http://www.huntingfootage.com/forums/index.php?s=2dd6b66765997e6bfc7059ade6777b3d&s howtopic=2282&pid=9449&st=0&#entry9449