The car (Chassis+body) may cost you $1K
Starter Kit (Transmitter KT-18+Charger+Battery) may cost you $700
For the exact cost, you should ask dNaNo HK directly (www.dnano.com.hk) as the Jap Yen rate is really high these days.
I used to play 1:10, 1:8 first and get smaller and smaller scale in time. Now I only play dNaNo and recently re-pick up Mini-Z. Problem with bigger scale cars is you spend most of the time fixing the car while for dNaNo you spend 90% of the time playing it as maintenance is easy and fast. What's best is parts are hard to break even you hit it hard.