This is a great video (by the Autocar India YT channel) to watch in order to get an idea of the “diecast model car collecting world”, if you are a complete beginner. It goes over model scales, prices and more.
By the way, I had to lookup the value of Indian Rupee for this video (80INR = $1USD).
By the way, if you’re thinking about starting a diecast model car collection, one of the best places to shop is DiecastModelWholesale.com