Where are you arriving in Tuscany? Usually a car is rented in Florence, this website can let you choose where to pick the car up and will give you an idea of the daily price,
let me know if I can be of further help,
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Tuscany Travel Blog and Tourist Travel Guide to Holidays in Tuscany, Toscana, Italy - Tourist Guide to Tuscany Best Destinations, Best Hotels and Accommodations, Luxury Villas for rent, Tuscan Recipes. Tuscan Trip Planning, Customized Travel Service, Tuscany Itinerary plan, Tours of Tuscany Italia, Tuscany blogger, best italy travel blogs.