Yes you can buy Carnauba Wax polish on eBay. This is simply carnauba wax dissolved/suspended in solvent (basically white spirit or odourless kerosene). The price is around a tenner for a 400ml bottle. No colourants, no abrasives and no water. Good results too. Here's an example
http://cgi.ebay.co.uk/CARNAUBA-WAX-C...QQcmdZViewItem