You don't display where you reside on the planet, but you will not go wrong with this car http://jq-products.com/the-products/thecar-rtr
If you change your mind and want to do some serious racing, all you will need to change on 'The Car' is the servos and engine.
In your price range, there is no better quality RTR buggy than the JQ.
My first choice, a little more $$$ of course, is the Serpent Cobra.