Le Mans 2016 cost?

[rb26]

Was thinking about going next year to Le Mans with some good friends. Seeming as I've only ever done it once when I was much younger and my friends have never done it. Does anyone know what it would cost to have 5 people camping from Thursday evening to Sunday evening? We'd probably get the train through all the way to Le Mans or potentially buy a very cheap, throw away car just for the weekend (being creative with the styling of said car!).

What would you experienced gentlemen (and ladies) recommend for greenhorn Le Mans pilgrims!