I occasionally look at used GPS units on E-Bay. They are discounted about $500-$1000 from the price of a brand new unit from Garmin/Avidyne. This doesn't include the indicator/harness/antenna which you will have to spring for separately. This seems crazy to me. For an additional 5%-10%, you get a brand new unit with a better warranty and no support end-date.
Is there some secret stash of Garmin 430W units out there that I am missing?