They could range from around 150 to well over 500.. if you just want it as a cool toy..don't spend more than around 200.. i heard the tomtom was pretty cool.. also a friend of mine sent me this site to look at: http://www.teletype.com

I recently purchased the Garmin C330 for $289 @ Walmart. I like it very much. However, I understand that the Garmin "Nuvi" is a bit more expensive, but even better.