Uh oh, looks like JVC gave up on the GPS market. Seems that they pulled the plug on selling portable GPS units since people weren't paying $700 retail for them. That's why they've been selling for $300... just to get rid of their inventory. I'm sure that they still made money on them.
http://www.engadget.com/2007/05/18/jvc-exi...w-they-were-in/
More info in the Engadget article.