Buy It!! That model is discontinued, which explains the very good price. It is still a great GPS. You'll enjoy playing with it, and when you go into remote or unfamiliar areas it will be very useful. Make sure it has the Americas Highway base map.

GPS's aren't magic. They basically do one thing: they tell you where you are on the Earth. The Legend has mapping capability, which means it can show you where you are relative to nearby roads/cities. Other cool things they do include (1) save waypoints - places you've been or you want to go, (2) tell you the bearing needed to get from where you are to a waypoint, (3) tell you how fast you are going very accurately - tell that to the police, and (4) they provide the most accurate time available (from a atomic clock circling overhead).

Keep in mind that to get the most benefit you really should buy the MapSource Metroguide North America software that provides detailed maps.

Also, to get the most out of your GPS, take some time to learn about UTM coordinates and the associated grid tools. Here is a great source of info: http://www.maptools.com/ . I bought the little Grid Tool and like it. Make sure you get one that matches your map's scale. Also, some compasses come with a UTM corner tool - check for that first.

If using inside your car, consider getting a RAM suction cup mount made for it. They really really work great: http://www.rammount.com/ . I'm not related to the company, but have lived through the horror of seeing my GPS slam into my windshield during a panic stop.