I bought the Tibo GPS Navigation System (S1000) about 1.5 months ago at S$850 and is willing to sell it at S$450 as my new car will come with in-built GPS. I have only used the Tibo GPS Navigation System twice so far when I drove up to Malaysia. It still comes with warranty. Please let me know if you are interested.
You can refer to the URL link as below for details of the GPS System: http://www.elecom.com.sg/ProductInfo/s1000.asp