Wanted: Garmin GDL39

I’m considering upgrading from an aera 500 to an aera 660. The 660 can show traffic and weather but only if it’s from a Garmin receiver, like the GDL39 or GDL52. At $1150 a GDL52 is out of the question.  I think I can get a GDL39 for $475. So it’s $850 for the aera 660, $125 for the dock from AirGizmos, and $475 for the GDL 39. That’s $1450 just to put another portable in my panel. Good old Garmin makes sure their GPS units won’t work with Stratus/Stratux. 

If anyone has a used GDL39 it could help convince me to do this. I know they’ve been around a while so I’m hoping I can find one at a reasonable price. 

Thanks