I have bought 4 second hand cr's from ebay. All from USA. It is possible to get them very cheap from there. I paid $70 for my last one, and it was in very nice condition.
If you want to buy a new one I would recommend this page:
http://www.losipartshouse.com
The cheapest you will find, superfast and very serious. Have traded a lot with those guys, always a pleasure!
Edit: Yes, they still make it.
http://www.losi.com
It is a great car!