If anyone is interested, I just bought two 2820's from Buyeretail.com
for $413.00 a piece. I notice he has them for $450.00 now but that is still a very good price. These are new units not refurbs.
The people at Buyeretail are great to do business with also. I had to send one of the 2820's back because neither me nor a Garmin tech could get the bluetooth to enable. Buyeretail promptly gave me an RMA and sent a new 2820 out the day they got the bad one back.
All the usual disclaimers...I have no affiliation...just a satisfied customer.