Thats likely due to (some) people knowing they can still get a 30 gig unit for $89 more. People can order the 12 gigs from Carplayer.com for the same price, and from a company instead of an individual.

Your best bet is putting it on ebay and finding someone either internationally or that doesn't know where to get these still.

Or, and here's a new idea, sell it for less. Then you could 'offload' it.