Join Date: May 2008
Location: Toronto - way way way too much traffic
Same caveats as buying anything used on ebay - reputable seller - return policy and so on.
Registering a previously registered 2720 I bought from TigerGPS.com took one toll free phone call to Garmin - provided the serial and model numbers and they sorted it out. Fortunately the mapset was up to date. With registration I get to do the software updates from time to time. I'm about due for a map update. You'll want to budget about $65 for 2010 maps or I believe you can get a lifetime update for $100-ish.
Instead of Ebay my method was to google "refurbished garmin XXXX" The XXXX being the model I was looking for. TigerGPS and a few other refurb dealers came up. It was just easier to deal with them directly. The GPS I received looked as if it had never been out of the package.
'04 650, and goshdarnit it's fun - matte silver (#9 in the Silver 'Strom Club)
farewell to an '81 KZ550, '83 GPz750, '83 V45 Sabre, R-Reg GT380, '84 GPz550, early '70s DT175, and a '72 Peugeot 102