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There are a lot of use for GPS (Global Positioning System) that people are so enamored into buying one just like a normal household appliances. 10 years ago, GPS is not a very household topic which a normal joe can even explain. Mostly, military people are the one who use this technology for missions and locating enemy targets. Now, GPS is used by billions of people around the globe primarily for navigation but can also be used into mining, golf, construction and so on. There are several cheap gps systems available online. They are cheap (under 100 dollars or so) which you can buy and help your way on the road. You can also go to eBay to bid for a particular gadget or better you can trade your old GPS for a new one. Some individuals might get interested with your GPS because of its functionality so better do those things instead of throwing your old one away.