Although not the same model number as you're asking about, the Garmin 2820 is the exact duplicate that Victory installs under their own badge, but hundreds less. Might be worth a look. You can still get 'em refurished, if not brand new, for less than a couple hundred. Victory sells the mount. Google it.
The 2820 is discontinued, so Garmin no longer provides software upgrades, but you can still subscribe for map upgrades and Garmin provides desktop software at no charge, so you can work with your GPS with either Windows or Mac platform.
Even though it's "old" technology, I'm still impressed with it! There's a lot of functionality and power inside that little box!