Probably approximately $100. There are used tomtom GPS devices for as low as $7 and as high as $210 on ebay. http://popular.ebay.com/consumer-electronics/tomtom-gps.htm
This Question doesnt make sense, TomTom is public company - http://en.wikipedia.org/wiki/TomTom , http://www.tomtom.com
A tomtom gps for motorcycle, if you're not careful, can cost a pretty penny. Amazon for 495.00 used and a refurbished for 699.00 and that's the cheapest I've seen so far. http://www.amazon.com/TomTom-Rider-Navigator-Motorcycles-Scooters/dp/B000VB6VOC The highest I've seen is 799.95 at Gosale.com. So I don't think it'll get much lower than that.
There are several different kinds of TomTom GPS units. Most of their units will run the average consumer between $90 and $160, depending on what model you choose.
According to customer reviews the TomTom is pereferred over the Garmin in most cases for cost reasons.
If it is not under warrenty there isn't much you can do...
The prices on tomtom navigtion systems can vary. You can buy them used for around 45.99 or brand new for around 150.00. Here is there website you can have a look to see which tomtom suits your budget: http://www.tomtom.com/
TomTom's population is 3,500.
I would say yes that you probably do need a TomTom receiver with every TomTom GPS, however to be sure i would maybe go to the TomTom's website and see what it says.
Both TomTom and Garmin appear to have a wide range of prices for their varying gps mounts. Anywhere from $10 to $33.
The TomTom should have a model number on it and when you do buy a screen protector you should be able to look on the box to see if it is compatable with the TomTom that you have.
The TomTom was invented in the year 1991. The TomTom is a very popular navigation system used in cars worldwide.