The Used - Like New price from Amazon Warehouse dropped to about $427 on July 3, 2013. Currently it is at $469. You are looking at New. They are different animals. You can use the CamelCamelCamel pricing feature to see the price fluctuations:
You can set a price watch and CCC will send an email alert on the price drop. Third party used is the category I bought. I guess Amazon Warehouse is considered third party. When I was haggling over my dysfunctional 809, the Amazon reps had little power to price match the now higher price 809s with my broken 809. Thankfully I repaired my 809 and did not need to return.