The Basic Price for Tata Nano For Dealer is Rs. 1 Lac. The Ex-Show Room Price is different for different city. But it's Nearly Rs. 1,30,000/- You can book it with Rs. 70,000 and wait for your turn.
New Tata Nano with EasyShift is available at Rs. 2 lac (Ex-showroom, Delhi), and the final cost depends on the valuation of your car. So, first get the valuation of your car from authorized Tata dealer, so he can give you a final quote for the new car.